International Telecom Settlements: Gaming Incentives, Carrier Alliances and Pareto-Superior Reform

Liberalized countries that allow competition in international telecommunications favor traffic re-routing practices as arbitrage against foreign monopolists. This view is seriously incomplete. Monopolists, allied with carriers in liberalized countries, can use these practices to reduce termination payments to nonalliance carriersöthereby harming also consumers in liberalized countriesöby gaming regulations that require equal termination rates at both ends and 'proportional return' (the monopolist's traffic is allocated among carriers in proportion to their shares of traffic to its country). We also present a simple bilateral settlements reform that eliminates gaming incentives and other proportional-return distortions, yet benefits both countries.     

Competition between multiple asymmetric networks: Theory and applications

This paper presents a tractable model of network competition with many firms, elastic subscriber demand, off-net price discrimination, call externalities, and cost and market share asymmetries. We characterize stability in expectations and equilibrium under firm- and market-level network effects. The model is applied to simulate the effects of termination rates, market maturity, and retail pricing strategies. We show that predictions based on duopoly models can be misleading, in particular concerning the effects of termination rates.     

Platform competition with complementary products

We characterize the pricing structure in a model of platform competition in which two firms offer horizontally differentiated platforms and two sets of complementors offer products that are exclusive to each platform, respectively. We highlight the presence of indirect network effects: platforms and complementors benefit from the quality and number of firms in their group and suffer from the quality and number of firms in the rival’s group through their effects on prices and market share. We then determine the incentives of platforms to subsidize the independent complementors in an equilibrium. We further analyze the incentives of each platform to form a strategic alliance with complementors through contractual exclusivity or technological compatibility, or to integrate with the complementors. Finally, we discuss the welfare consequences of these strategies.     

网络产业的联盟结构研究

网络产业中的企业技术联盟成为标准竞争的行动主体，市场表现为一定的联盟结构。本文通过引入企业选择技术标准的博弈模型揭示了网络效应与联盟结构的内在联系，重点分析了联盟结构分散化趋势的成因，指出较之垄断型联盟结构，竞争型联盟结构尽管损失了部分网络效应，但它促进了产品多样化，增加了消费者福利，有利于技术进步，从动态发展的视角看增进了社会福利。最后，本文对我国企业参与国际化网络竞争提出了一些政策建议。     

Merger Incentives and the Failing Firm Defense

The merger incentives between profitable firms differ fundamentally from the incentives of a profitable firm to merge with a failing firm. We investigate these incentives under different modes of price competition and Cournot behavior. Our main finding is that firms strictly prefer exit of the failing firm to acquisition. This result may imply that other than strategic reasons, like economies of scale, must be looked for to understand why firms make use of the failing firm defense. However, when products are sufficiently heterogenous, we find that (i) the failing firm defense can be welfare enhancing and (ii) a government bail‐out increases total welfare when the number of firms is sufficiently low.     

Horizontal subcontracting and investment in idle dispatchable power plants

We analyze horizontal subcontracting and show how idle production facilities can reduce contracting costs by credibly protecting against hold-up. Our analysis contributes to understanding competition between power firms that increasingly use intermittent generation sources. Their unilateral incentives to invest in maintaining underused units, such as dispatchable gas-fired plants, are underrated by plant profitability indicators. From a policy perspective, decentralized strategic investment incentives reduce the possible need for centralized security of supply measures. Our welfare analysis indicates that quantity competition can lead to a lower market-clearing price than price competition.     

Differentiated Standards and Patent Pools

We consider patent pool formation by owners of essential patents for differentiated standards that may be complements or substitutes in use. Pooling improves coordination in terms of royalty setting within a standard but provokes a strategic response from licensors in the competing standard. We characterise the incentives to form and defect from pools within standards and show how pool formation and stability depend on competition between standards. We also examine strategic patent pool formation by consortium standards and show that policies promoting compatibility of standards may increase or decrease welfare depending on the effects on the incentives to form pools.     

In Google we trust?

We examine the incentives of a monopolistic search engine, funded by advertising, to provide reliable search results. We distinguish two types of search results: sponsored and organic (not-paid-for). Organic results are most important in searches for online content, while sponsored results are more important in product searches. By modeling the underlying markets for online content and offline products, we can identify the sources of distortions for each type of result, and their interaction. This explicit treatment proves crucial for understanding, not only spillovers across markets, but also fundamental policy issues, such as the welfare effects of integration. In particular, integration of the engine with a small fraction of content providers is welfare-enhancing when incentives to distort are stronger for sponsored than organic search, but welfare-reducing in the opposite case.     

The impact of regulating mobile termination rates and MNO-MVNO relationships on retail prices

A mobile virtual network operator (MVNO) provides mobile telecommunication services by eluding the constraints of the radio communication infrastructure and establishing an agreement with a hosting network operator (HNO) for the use of its spectrum. Thus, MVNOs offer a wide range of mobile services and directly compete with every mobile network operator (MNO). This paper studies the economic justifications for potential regulatory intervention that defines the level of mobile termination rates (MTRs) and negotiations and agreements among MVNOs and HNOs. The results show that symmetric MTR reduction leads to competition growth among operators, forcing every operator to reduce retail prices and, consequently, to enhancing consumer welfare. The paper also finds that a collaborative strategy adopted by an HNO and an MVNO is advantageous for both and induces a reduction in retail prices, thus weakening other MNOs.     

The timing of product introduction and the credibility of compatibility decisions

We analyze the compatibility choices of two firms which must also decide when to introduce their goods in a market characterized by network externalities. We show that the firms' incentives to achieve compatibility depend crucially on the time at which the degree of compatibility must be chosen. This raises the possibility of time inconsistencies, as a firm which initially favors compatibility might prefer incompatibility once one of the two goods has been introduced. We also determine the socially optimal standardization policies, both in a domestic and in an international context.     

INFORMATIVE ADVERTISING: COMPETITION OR COOPERATION?*

In a duopoly version of the Grossman and Shapiro [1984] model of informative advertising, I examine firms' incentives to semicollude on advertising and the welfare implications thereof. I find that, relative to the noncooperative outcome, semicollusion on advertising is more profitable but is detrimental to welfare. I also find that when the advertising cost is ‘low,’ advertising semicollusion is more harmful to welfare than price semicollusion. These findings are important for competition policy since traditionally, cooperative advertising is not treated in the same light as price collusion.     

Lump-Sum Payments and Retail Services: A Relational Contracting Perspective*

How should manufacturers motivate their retailers to provide customer services? The vertical restraints literature tells us that retail competition distorts service incentives in the short run. We consider how repeated interaction mitigates this problem, and particularly how a manufacturer can provide service incentives with discretionary lump-sum payments. We find that these payments may allow the manufacturer to sustain optimal service levels even if retailers are very impatient. We also show that banning reverse lump-sum payments may deprive consumers of the chance to enjoy high-quality services, and thereby reduce their welfare.     

Incentive Compensation and the Likelihood of Termination: Theory and Evidence from Real Estate Organizations

We analyze two managerial compensation incentive devices: the threat of termination and pay for performance. We first develop a simple model predicting that these devices are substitutes: when termination incentives are low, optimal contracts provide stronger pay‐for‐performance incentives. We then use data from real estate organizations to provide two independent tests of the model’s central prediction. First, we use the fact that chief executive officers of Real Estate Investment Trusts (REITs) and general partners of Real Estate Limited Partnerships (RELPs) perform similar tasks, yet organizational features of RELPs ensure that the latter are much harder to terminate. Consistent with the model, we find that pay‐for‐performance sensitivity is much higher for general partners of RELPs, where the termination threat is less credible. Second, we use a recent cross‐section of REITs to show that in property types where it is expected to be more costly to replace managers, those managers have stronger pay‐for‐performance incentives.     

PATENT DAMAGES AND SPATIAL COMPETITION*

We analyze price competition between a spatially differentiated product patentee and an imitator anticipating probabilistic future patent damages. We compare the performance of three damage regimes. The ‘reasonable royalty’ regime, which yields symmetric equilibrium pricing, maximizes static welfare and yields the highest innovation incentives when patent enforcement is nearly certain. The ‘lost profits’ regime, which may deter infringement, yields the highest innovation incentives when patent enforcement is less‐than‐certain and products are sufficiently valuable. The ‘unjust enrichment’ regime yields low static efficiency and low innovation incentives. We offer new insights into the ‘hypothetical negotiation’ that courts use to construct reasonable royalties.     

Changes in trade and domestic distortions affecting China’s agriculture

This paper assesses the implications of China’s trade and domestic policies for incentives to producers in China. It uses a price comparison methodology (nominal rates of assistance—at the border and the farmgate), with adjustments for exchange rate distortions in the first part of the sample period (1981–1994). On average, distortions to agricultural incentives have been reduced. In the early 1980s, on average, China’s domestic prices were far below international prices. There were substantial variations, however, between imported (which were being protected) and exported goods. During the 1980s and 1990s the gap between domestic and international prices for both imports and exports narrowed initially mainly due to the elimination of domestic policy distortions. Between the mid-1990s and 2004, trade liberalization policy furthered narrowed the gap between world and China farmgate prices. By the mid-2000s, China’s agriculture was operating with only small price distortions.     

Maximizing the adoption of fixed number portability within the EU: An empirical analysis

Number portability (NP) is considered by the European Commission as a key measure for promoting competition within the telecom sector especially regarding network access infrastructure. However, NP requires several modifications to the network architecture and to the business processes of each operator that, depending on network size, may result in a significant financial cost. This is true for fixed networks in particular. Given the requirement for such an investment, National Regulatory Authorities (NRAs) desire a clear picture on what to expect, in terms of progress in access competition, when introducing fixed NP in their respective markets. The paper approaches this question by correlating several fixed telephony market indices related to access competition to the degree of success of fixed NP. Relevant analysis based on European Union member states’ data indicates that fixed NP does not significantly contribute to local loop unbundling (LLU) adoption in markets where there are other access technologies available. In these markets, access competition via these other technologies and fixed NP initially achieve similar penetration rates. Consequently, when access competition exceeds a certain threshold and given a reasonable pricing regime then fixed NP is further boosted to include broadband connections based on several broadband technologies/methodologies such as LLU and cable as well as existing narrowband access technologies (e.g. narrowband cable connections). In markets where LLU is the only alternative for access then the rate of Fixed NP adoption is directly correlated with the success of LLU. Consequently, these conclusions are considered within a high-level stepwise approach for NP implementation, which is based on the experience acquired from the respective Greek national project.     

When prohibiting wholesale price-parity agreements may harm consumers

We study the competitive and welfare effects of wholesale price-parity agreements. These contracts prevent a monopolist, who sells its product to final consumers both directly and indirectly through alternative distribution channels, to charge different input (wholesale) prices to competing intermediaries (e.g., platforms). In a multi-channel and multi-layered industry, organized as an agency business model, we find that the monopolist and the intermediaries do not necessarily have aligned incentives concerning the introduction of wholesale price-parity. While these agreements always hurt the monopolist, they may benefit the intermediaries when competition between the direct and the indirect distribution channels is sufficiently intense. Moreover, when this is the case, in contrast to retail price-parity agreements that typically reduce consumer welfare, wholesale price-parity may also benefit consumers.     

Welfare Analysis of Regulating Mobile Termination Rates in the U.K.

We develop a calibrated simulation model of the U.K. mobile telephony market and use it to analyze the effects of reducing mobile termination rates (MTR's) as recommended by the European Commission. We find that reducing MTR's is likely to increase both consumer surplus and networks' profits. Depending on the strength of call externalities (i.e., benefits to the recipient of a call), social welfare may increase by as much as £1 billion to £4.6 billion per year. We also use the model to estimate the welfare effects of the 2010 merger between Orange and T‐Mobile and find that the merger led to a substantial reduction in consumer surplus.     

FUNCTIONAL DEGRADATION AND ASYMMETRIC NETWORK EFFECTS*

In markets subject to network effects, firms often remove some functions of their original products and sell a functionally‐downgraded version at a lower or zero price. This paper aims to provide a pure network effect based explanation of such a practice. Building a functional degradation model with asymmetric network effects, we investigate when and why firms have incentives to introduce a functionally‐degraded good and discuss its welfare implication.     

SPLINTERING AND INERTIA IN NETWORK INDUSTRIES*

We analyse a stylised game of technology adoption with network effects and two new technologies. Potential adopters can adopt early, late or not at all. We show that one of the reasons for the failure of new technologies can be the presence of multiple incompatible variants of that technology. An adopter's individual incentives to adopt are lower with two technologies than with one. Turning to aggregate expected welfare, we find that two active technologies may be welfare‐improving.