Investments in next generation access infrastructures under regulatory uncertainty

This article studies the impact of regulatory uncertainty on an incumbent’s incentives to undertake the socially optimal investments in NGA networks. Thus, a regulatory non-commitment setting in which the regulator sets the access price after the deployment of the NGA network is used. In particular, it is assumed that the regulator sets the access price at the marginal cost of providing the access with some probability and gives an access markup, which equals the average cost of the investments, with the complementary probability. It is found that when the slope of the marginal investment cost function is not particularly steep in relation to the impact of investments on demand, the incumbent underinvests compared to the socially optimal investment level. On the contrary, in a more realistic case when the impact of investments on demand is low in relation to the slope of the marginal investment cost function, the incumbent may overinvest or underinvest depending on the probability of incorporating an access markup into the access price.     

Incentives for labour-augmenting innovations in vertical markets: The role of wage rate

This article analyses the link between the wage rate and the incentives to develop and adopt a labour-augmenting innovation in a vertical market. In a model where an upstream monopolist sells the innovation to several downstream manufacturers, I show that the wage rate affects the incentives to innovate in different ways depending on i) the initial level of wage and ii) the timing of the policy’s implementation. Moreover, if the policy is introduced when the size and the price of innovation are common knowledge, then the policy-maker can elicit her preferred equilibrium by nudging more firms to adopt the technology. Instead, if the policy is introduced before the investment stage, then the increase of the wage rate generates two opposite effects: a positive cost-reducing effect and a negative output-contraction effect. If and only if the wage level is below a critical threshold, the former dominates the latter. I argue that, under certain conditions, a policy that raises the price of labour may be beneficial for both the incentives to invest in labour-augmenting innovation and the industry outcomes.     

Legal unbundling can be a golden mean between vertical integration and ownership separation

We study an industry in which an upstream monopolist supplies an essential input at a regulated price to several downstream firms. Legal unbundling means in our model that a downstream firm owns the upstream firm, but this upstream firm is legally independent and maximizes its own upstream profits. We allow for non-tariff discrimination by the upstream firm and show that under quite general conditions legal unbundling never yields lower quantities in the downstream market than ownership separation and integration. Therefore, typically, consumer surplus will be largest under legal unbundling. Outcomes under legal unbundling are still advantageous when we allow for discriminatory capacity investments, investments into marginal cost reduction and investments into network reliability. If access prices are unregulated, however, legal unbundling may be quite undesirable.     

Infrastructure investment and optimal access regulation in the different stages of telecommunications market liberalization

In this paper, we compare the optimal access regulation under three different market configurations that approximate the different stages of telecommunications market liberalization. We show that in the first stage of market liberalization the regulator has to balance between static efficiency and investment and that the optimal access price may be above marginal cost. In the second stage, two different outcomes are possible. If entrants tend to underinvest, the regulator balances between static efficiency and investment. If entrants tend to overinvest, the regulator sets the access price as low as possible in order to prevent or limit infrastructure duplication. Interestingly, we find that in the third stage of market liberalization the regulator may decide to promote infrastructure duplication and to set the access price above the price in the first stage of market liberalization, even if telecommunications network operators tend to overinvest in infrastructure duplication.     

Access regulation and investment in next generation networks — A ranking of regulatory regimes

This paper analyses how different types of access regulation to next generation networks affect investments and consumer welfare. The model consists of an investment stage with uncertain returns and subsequent quantity competition. The access price is a function of investment costs and the regulatory regime. A regime with fully distributed costs or a regulatory holiday induces highest investments, followed by risk-sharing and long run incremental costs regulation. Simulations indicate that risk-sharing creates most consumer welfare, followed by regimes with fully distributed costs, regulatory holiday and long run incremental costs, respectively. Risk-sharing benefits consumers as it combines relatively high ex-ante investment incentives with strong ex-post competitive intensity.     

Roaming and investments in the mobile internet market

This model discusses mobile network operators' (MNOs) incentives to invest in their network facilities such as new 4G networks under various regimes of data roaming charge regulation. Given an induced externality of investments (spillovers) due to the roaming agreements it will be shown that MNOs, competing on investments, widely set higher investments for below cost regulation of roaming charges. Otherwise, if MNOs are free to collaborate on investments, they set higher investment levels for above cost roaming charges. Both below and above cost charges may be preferred from a welfare perspective. Furthermore, the paper discusses effects of the roaming charge regulation on roaming quality and MNOs' coverage.     

Price caps with capacity precommitment

We examine the effectiveness of price caps to regulate imperfectly competitive markets in which the demand is uncertain. To that effect, we study a monopoly that makes irreversible capacity investments ex-ante, and then chooses its output up to capacity upon observing the realization of demand. We show that the optimal price cap must trade off the incentives for capacity investment and capacity withholding, and is above the unit cost of capacity. Moreover, while a price cap provides incentives for capacity investment and mitigates market power, it cannot eliminate inefficiencies. Capacity payments provide a useful complementary instrument.     

Can collusion promote sustainable consumption and production?

Several competition authorities consider the exemption of horizontal agreements among firms from antitrust liability if the agreements sufficiently promote public interest objectives such as sustainable consumption and production. We show that when consumers value sustainable products and firms choose investments in sustainability before choosing output or prices, coordination of output choices or prices boosts investments in sustainability and may even enhance consumer surplus when products are sufficiently close substitutes and the marginal cost of investment in sustainability is relatively low. By contrast, coordination of investments in sustainability leads to lower investments and harms consumers.     

Asymmetries in cost structures and incentives towards price competition

This paper provides some theoretical grounds to relate asymmetries in cost structures and incentives towards price competition. Typically low cost firms favor price competition whereas the reserve is true for high cost firms. Increased price competition will tend to diminish price-cost margins for all firms but the low cost firms may increase their total profits through an enlarged market share. This analysis depends on two relevant parameters: the way the overall market will react to increased price competition and interfirm cross elasticities. This is proved using comparative statics at the Nash equilibrium of an oligopolistic model.     

Pricing Network Interconnection: Advantages Held by Integrated Telecom Carriers

A recurring telecommunications policy debate centers on whether incumbent, vertically integrated local exchange carriers have an incentive to discriminate in price against down-stage service rivals who interconnect to their network (a price squeeze). The concern is typically voiced in one of two claims: (1) there is an incentive for an incumbent to use a price squeeze when access prices are set above long-run incremental cost; or (2) prices set at that cost are preferred for interconnection because they eliminate incentives for a price squeeze. In principle, form (1) is generally true (Proposition 1), but form (2) is generally not (Proposition 2), The proof of these Propositions reveals why pricing access at long-run incremental cost coupled with appropriate price floors in the down-stage market does eliminate the incentive to squeeze.     

Search Costs and Investment in Quality

In this paper we analyze how lower search costs affect firms' incentives to invest in quality. We identify two conflicting effects. On the one hand, lower search costs increase incentives to invest in quality by eroding the market share of low quality firms and increasing the market share of high quality firms. On the other hand, by intensifying price competition, lower search costs adversely affect high quality firms more than low quality firms. The net effect of a change in the search cost on quality is shown to depend on the initial quality distribution. There is a critical value such that, if the proportion of high quality firms is initially below this value, lower search costs increase this proportion, whereas if the initial quality is above this value, lower search cost decreases the proportion of high quality firms. We show that our results are consistent with a ‘superstar effect.’     

Competition and investment — A unified approach

Using a simple but general two-stage framework, this paper identifies the circumstances under which increasing competition leads to more cost-reducing investments. The framework can, for instance, capture increasing substitutability for different types of oligopoly models or changes from Cournot to Bertrand competition. The paper identifies four transmission mechanisms by which competition affects investment. For a firm with lower initial marginal costs (higher efficiency), a positive effect of competition on investment is more likely. Positive spillovers support a negative effect of competition on investment. The relation between competition and investment is not affected in an unambiguous way by the level of pre-existing competition.     

The Access Pricing Problem with Deregulation: A Note

This note extends the analysis of Armstrong, Doyle and Vickers [1996] to the case of retail price deregulation. It is shown (i) that the optimal access price may be above, below, or (in the linear case) equal to marginal cost, (ii) that optimal regulation of the margin between the retail price and the access price entails the ECPR, and (iii) that welfare and entrant profit are higher when the level of the access price, rather than the margin, is regulated.     

The effect of horizontal mergers,when firms compete in prices and investments

Motivated by a number of high-profile antitrust cases, we study mergers when firms offer differentiated products and compete in prices and investments. Since the net effect of the merger is a priori ambiguous, we use aggregative game theory to sign it: we find that absent efficiency gains, the merger always reduces total investments and consumer surplus. We also prove that there exist classes of models for which the results obtained with cost-reducing investments are equivalent to those with quality-enhancing investments.     

Opportunity Cost Pass‐Through from Fossil Fuel Market Prices to Procurement Costs of the U.S. Power Producers

This paper investigates the transmission of fossil fuel commodity spot market price changes to procurement costs of U.S. power producers. We measure and compare the speed and magnitude with which spot prices predict procurement costs using restricted access fuel price data. Natural gas spot prices are quickly reflected in procurement costs. Coal spot prices offer very little predictive power to coal procurement costs. Although not causal, the empirical results also show differences across regulatory status. These findings may have implications for the electricity market deregulation literature that creates marginal cost curves as a competitive benchmark.     

An experimental test of automatic mitigation of wholesale electricity prices

In several major deregulated electricity generation markets, the market operator uses an “automatic mitigation procedure” (AMP) to attempt to suppress the exercise of market power. A leading type of AMP compares the offer price from each generation unit with a recent historical average of accepted offer prices from that same unit during periods when there was no transmission-system congestion to impede competition. If one or more units' offer prices exceed the recent historical average by more than a specified margin, and if these offer prices raise the market-clearing price by more than a specified margin, the market operator replaces the offending offer prices with lower ones. In an experiment, we test an AMP of this type. We find that it keeps market prices close to marginal cost if generation owners have low market power in uncongested periods. However, with high market power in uncongested periods, a condition that may apply in many parts of the world, the generation owners are able to gradually raise the market price well above short-run marginal cost in spite of the AMP. We also test the effect of the AMP on the frequency with which high-variable-cost units are used, inefficiently, in place of low-variable-cost units.     

Product price and performance level in one market or two separated markets under various cost structures and functions

Market characteristics, including intrinsic demand and customer sensitivity on price and product performance level, are distinct at different markets. Comparisons of various product development strategies in one market or two geographically separated markets are conducted for three classes of products: development intensive products (DIPs) with constant unit cost, marginal cost-intensive products (MIPs) with constant fixed cost, and marginal and development intensive products (MDIPs) with non-constant unit cost and fixed cost. Results show that larger demand size, less customer sensitivity on price and/or more sensitivity on performance level lead to more profit, a higher sale price and a not-lower product performance. The customer reservation or the saturation performance level should be generally adopted though the optimal performance level does exist occasionally. Unit cost and/or fixed cost must increase in performance at an increasing rate for the existence of one optimal performance level. Due to the impact of demand size, one high-end (low-end) MDIP or DIP could be introduced into one low-end (high-end) market at a different price if the demand size is significantly large in the low-end market. For DIPs, offering one niche high-end product is not worse than offering the low-end product into two markets. For MIPs with negligible fixed cost, the product line strategy is not worse than the standard product development strategy. Additionally, the product cost reduction approach adopted in one product line has significant effects on the best product development strategy and sequence.     

INFORMATION EXCHANGE AND COMPETITION IN COMMUNICATIONS NETWORKS*

We develop a model of information exchange between calling parties. We characterize the equilibrium when two interconnected networks compete by charging both for outgoing and incoming calls. We show that networks have reduced incentives to use off‐net price discrimination to induce a connectivity breakdown when calls originated and received are complements in the information exchange. This breakdown disappears if operators are allowed to negotiate reciprocal access charges. We also study the relationship between sending and receiving retail charges as a function of the level of access charges. We identify circumstances where private negotiations over access charges induce first‐best retail prices.     

Platform most-favored-customer clauses and investment incentives

This paper examines the effects of platform most-favored-customer (PMFC) clauses on incentives for platforms to invest in demand-enhancing investments that might involve spillover effects. In a bilateral duopoly model incorporating competition between sellers and between platforms, we show that the industry-wide adoption of PMFC clauses raises the platforms’ investment level and the resulting retail price if the substitution between platforms is large compared to the substitution between sellers. Additionally, we assess the respective effects of PMFC clauses on the demand, profit of sellers, profit of platforms, consumer surplus, and social welfare. The results suggest a possible conflict between platforms and competition authorities.     

The welfare effects of cooperative R&D in oligopoly with spillovers

This paper provides a more complete characterization of the welfare effects of cooperative cost-reducing R&D investments in Cournot oligopoly with spillovers. I show that R&D cooperation reduces both R&D spending and social surplus when the spillover rate in R&D is neither sufficiently high nor sufficiently low. As the elasticity of the slope of the inverse demand function increases, however, the set of spillover rates over which cooperative R&D reduces social welfare shrinks, and in the limit, cooperative R&D is socially beneficial for all spillover rates.