Raising rivals' costs: The entry of an upstream monopolist into downstream markets

A regulated upstream monopolist provides an input to firms in a downstream market. If the monopolist enters the downstream market, a natural concern is that it will act so as to raise its downstream rivals' costs. An offsetting incentive is that a higher downstream price will reduce demand for the input, which reduces the monopolist's profit. Conditions under which one incentive dominates the other are derived. The monopolist may desire to lower its downstream rivals' costs rather than raise them. These findings suggest that regulatory policy towards such downstream entry should not focus exclusively on the ability to discriminate.     

Access profit-sharing regulation with information acquisition and transmission

This paper analyses how information acquisition and transmission on the upstream cost affect the optimal access profit-sharing plan and the regulator’s choice of an information transmission regime in network industries characterized by a regulated upstream monopoly with cost uncertainty and an unregulated downstream duopoly. When the regulator obliges the upstream monopolist to transmit information to a downstream rival, the adoption of an access profit-sharing plan may boost his/her incentives to acquire information. It will be shown that the optimal access profit-sharing plan under information transmission depends on the variance and shape of cost distribution. Moreover, an information transmission regime proves to be welfare preferable to a regime with no information transmission only if it induces information acquisition and if the regulator is significantly concerned about firms’ profits.     

Entry, Prices, and Investment in Regulated Industries

The paper studies how the optimal regulatory policy is affected by the possibility of unregulated firms entering the market. In such cases, the regulator may prefer to limit price and cost reductions in the regulated incumbent. The extent to which this happens is shown to depend on the extent of the regulator's commitment: if it commits to a chosen policy, then the market outcome following entry is less competitive than it would be without commitment: price and production costs are both higher. We also show that, unlike the natural monopoly case, incentives for cost reducing investment are stronger when the regulatory policy has a short regulatory interval.     

Local content and emission taxes when the number of foreign firms is endogenous

We consider a vertical relationship where an upstream monopolist supplies input to downstream duopolistic firms. Under the assumption that downstream firms produce under a soft capacity restriction, we show that the balance between price and quantity in downstream firms’ strategy is endogenous. In this way, the monopolist’s charge for input co-determines downstream market conduct. We spell out some consequences of this, for example, that an increase of downstream capacity costs can result in increased output. We discuss other implications in relation to pass-through and incidence of cost changes.     

Bottleneck co-ownership as a regulatory alternative

This paper proposes a regulatory mechanism for vertically related industries in which the upstream “bottleneck” segment faces significant returns to scale while other (downstream) segments may be more competitive. In the proposed mechanism, the ownership of the upstream firm is allocated to downstream firms in proportion to their shares of input purchases. This mechanism, while preserving downstream competition, partially internalizes the benefits of exploiting economies of scale resulting from an increase in downstream output. We show that this mechanism is more efficient than a disintegrated market structure in which the upstream natural monopoly bottleneck sets a price equal to average cost.     

Incentives for Discrimination when Upstream Monopolists Participate in Downstream Markets

A regulated upstream monopolist supplies an essential input to firms in a downstream market. If an upstream monopolist vertically integrates downstream, non-price discrimination becomes a concern. Discrimination always arises in equilibrium when the vertically integrated provider (VIP) is no less efficient than its rivals in the downstream market, but it does not always arise when the VIP is less efficient than its rivals. Numerical simulations that parameterize the regulator's ability to monitor discrimination in the case of long-distance telephone service in the U.S. reveal that pronounced efficiency differentials are required for the incentive to discriminate not to arise in equilibrium.     

On the rate of convergence of oligopoly equilibria in large markets: An example

In this note we explore the rate of convergence of Cournot-Nash equilibria with free entry and those with an entry deterring monopolist in a replicated market where the market demand functions is linear and firms face linear cost curves.     

Monopolization through endogenous vertical mergers

While endogenous merger analysis has been applied to horizontal mergers, the thrust of vertical merger analysis has been based on exogenous mergers. The goal of this paper is to analyze endogenous vertical mergers. I consider a market structure with a downstream monopolist and an oligopolistic upstream industry. The downstream monopolist chooses to buy a certain number of the upstream firms. Mergers are endogenous, in the sense that the bids made by the downstream firm must be accepted by each of the integrated upstream firms, and must not exceed the increase in the profits of the downstream firm. It is shown that the unique equilibrium is complete monopolization: the buyer buys all the firms in the upstream industry. This result is consistent with the result that vertical mergers are profitable. However, it is in contrast with horizontal endogenous mergers, where complete monopolization is generally not an equilibrium.     

Imported inputs and privatization in downstream mixed oligopoly with foreign ownership

This paper examines welfare implications of privatization in a mixed oligopoly with vertically related markets, where an upstream foreign monopolist sells an essential input to public and private firms located downstream in the domestic country. The impact on domestic welfare of privatizing the downstream public firm is shown to contain three effects. The first is an output distortion effect, which negatively affects welfare since privatization decreases the production of final good for consumption. The second is an input price lowering effect resulting from a decrease in derived demand for the input. When the level of privatization increases, a decrease in final good production lowers input demand, causing input price to decline and domestic welfare to increase. The third is a rent‐leaking effect associated with foreign ownership in the downstream private firm. The rival domestic firm strategically increases its final good production, causing profits accrued to foreign investors to increase and domestic welfare to decline. Without foreign ownership in the downstream private firm, the optimal policy toward the public firm is complete privatization as the output distortion effect is dominated by the input price lowering effect. With foreign ownership, however, complete privatization can never be socially optimal due to the additional negative impact on domestic welfare of the rent‐leaking effect. We further discuss implications for domestic welfare under different privatization schemes (e.g., selling the privatization shares to the upstream foreign monopolist or to the rival domestic firm).     

DOWNSTREAM R&D RIVALRY WITH SPILLOVERS AND DISCRIMINATORY INPUT PRICING

This paper examines how discriminatory input pricing by the upstream monopolist affects the R&D choices of downstream duopolists in the presence of R&D spillovers. We show that the monopoly supplier can benefit from a precommitment to uniform pricing because under uniform pricing the downstream firms invest more in R&D, leading to larger output and thus benefiting the supplier. When R&D spillovers are sufficiently large, the downstream firms are also better off under uniform pricing. Moreover, social welfare is always higher under uniform pricing.     

Export rivalry,vertically-related markets,and optimal public ownership policy

This paper considers the optimal public ownership policy of an upstream firm which competes with a foreign private rival. Both firms supply a produced input to the domestic and foreign downstream firms that compete in an export market. The paper shows that complete privatization of the domestic upstream firm is never optimal. It will likely be fully nationalized if its market share is high, the domestic downstream firms' market share is low, and the total number of firms in the downstream is large. Simulation results reveal that the public firm's optimal profit margin may be negative and that the government ownership level may exhibit a reswitching phenomenon as the number of domestic downstream firms keeps growing. The paper sheds light on the possibility of using government ownership policy as a pseudo-trade and industrial policy.     

R&D policy in a vertically related industry

In this paper, we analyze the effectiveness of public policy aimed to stimulate business-performed R&D in a vertically related market. We examine the role of an R&D active upstream supplier in a four-stage R&D model, where we incorporate public funding. The considered policy instrument is direct funding of firms’ R&D efforts. We calculate the optimal policies and show that they have a positive impact on firms’ R&D investments. From a welfare point of view, it is optimal to differentiate the subsidy rates between the upstream and the downstream markets. Competition in the product market leads to a higher subsidy rate to the upstream supplier than to the downstream firms. When concentration is high in the downstream market, the optimal solution is an R&D subsidy for these firms, otherwise the optimal solution is an R&D tax for the downstream firms.     

R&D subsidies in a duopoly market with outsourcing to the rival firm

This paper investigates the effects of a public uniform R&D subsidy policy in a downstream duopoly market in which a nonintegrated firm, which faces a lower marginal cost, outsources inputs from its vertically integrated rival. The findings show that, in this market structure, such a policy has relevant effects largely differentiated between downstream competitors, as it can significantly modify the relative market shares and profitability of competing firms. Unlike the standard Cournot setting augmented with R&D, results show that the subsidy policy can have different (counterintuitive) effects on R&D investments, output, and profits of the vertically integrated producer and the vertically separated firm, which hold in both cases of exogenous and endogenous (optimal) subsidy. Our findings offer some testable implications and suggest that a subsidy policy in a market with outsourcing to a rival should also consider the different effects of this approach on competitors.     

On the Regulation of a Vertically Differentiated Market

The aim of this paper is to investigate a vertically differentiated market served either by a multiproduct monopolist or by duopolists, in which a public authority aiming at increasing the welfare level can choose among two instruments, namely, quality taxation/subsidisation, and minimum quality standard. In the monopoly case they are equivalent as to the social welfare level, in that both allow the regulator to achieve the second best level of social welfare he would attain if he were to set qualities under the monopoly pricing rule, while they are not equivalent in terms of the distribution of surplus. In the duopoly regime, we show that there exists a taxation/subsidisation scheme inducing firms to produce the socially optimal qualites.     

海外市场需求与跨国垂直并购——基于低端下游企业的视角

本文构建了一个产品从低端到高端分布的Hotelling模型,以探讨我国低端下游企业进行跨国垂直并购的时机选择和决定因素。研究表明,垂直并购国外高端上游企业能实现扩大市场份额、提升产品定位的双重效能。海外市场需求环境对低端下游企业拓展战略起关键性作用。在正常需求条件下,与直接出口及先并购国内上游企业再出口两种模式相比,跨国垂直并购并非最优选择。在遭受负向需求冲击时,国外上游企业生产成本的大幅上升以及国外下游竞争对手品牌价值的下降给跨国垂直并购带来了契机,此时在技术密集度较高的上游产业进行跨国垂直并购成为国内低端下游企业的最优选择。如果并购能实现足够大的品牌价值效应,还会改善被并购企业所在国的社会福利水平。     

Strategic spin-offs of input divisions

When a downstream producer enters backward into the input market, a “helping the rivals effect” exists: Such entry hurts the firm's downstream business as it increases upstream competition and thus benefits its rival downstream firms. This negative externality prevents the newly-created upstream unit from expanding. A spin-off enables the firm to credibly expand in the input market, thereby forcing its upstream competitors to behave less aggressively. Spin-offs occur in equilibrium if and only if the number of downstream firms exceeds a threshold level. When there is more than one integrated firm, a spin-off by a firm can trigger spin-offs by others that would not occur otherwise.     

Entry decision of a vertically integrated foreign firm with downstream subsidization and upstream privatization

This study considers a vertical structure model in which an upstream state-owned enterprise (SOE) and a downstream domestic firm compete with a vertically integrated foreign firm (VIFF). We consider the cost-inefficiency of the SOE and examine the entry decisions of a VIFF under downstream subsidization. We find that without upstream privatization, the VIFF's entry decision might not be socially desirable unless it enters both markets and the cost inefficiency is intermediate. Additionally, a policy to reduce the cost inefficiency might cause a drastic welfare increase or loss when the VIFF changes its entry decision. We then examine upstream privatization and show that a substantial improvement in cost efficiency can increase welfare with privatization. When the SOE maximizes welfare, however, lesser (greater) cost efficiency improvement is necessary to increase welfare with privatization if the ex-ante cost inefficiency is high (low).     

FREE VERSUS SECOND‐BEST ENTRY IN COURNOT OLIGOPOLIES WITH FIRM‐SPECIFIC NETWORKS

This paper endogenizes the number of firms in an industry with positive network effects, complete incompatibility, and firms that compete in quantity. To this end, we compare two possibilities: free entry and second‐best number of firms (the one that maximizes social welfare). We show that with business‐stealing competition, free entry yields, in general, more firms than the socially optimal solution. In addition, we find that by the nature of the industry with firm‐specific networks, total production may be greater or lower under free entry than with a regulator; moreover, some industries attain their maximum social welfare with a monopoly.     

Entry into the electric power industry

Entry of new firms into the electric power industry is becoming commonplace. The entrants typically are unregulated firms that compete with regulated electric utilities only in the generation stage of the latter's vertically integrated structure. Because of the asymmetric regulatory treatment of the incumbents and entrants, there is the possibility of biases either against efficient entry or for inefficient entry. A model of a vertical integrated utility subject to rate-of-return regulation is used to illustrate the biases, and several implications for regulatory policy are discussed.     

Vertically Related Markets,Foreign Competition and Optimal Privatization Policy

This paper examines the optimal privatization policy in vertically related markets in which an upstream public firm competes with a foreign private rival in supplying a produced input to the domestic and foreign downstream firms competing in the domestic market. It shows that if the upstream public firm's market share is sufficiently high, full nationalization is optimal and the resulting profit margin is positive. However, complete privatization is never optimal. Numerical simulations reveal both the diverse optimal privatization regimes and the patterns of optimal privatization levels with varying numbers of the domestic and foreign downstream firms.