Competition policy and market leaders

We study the potential loss in social welfare and changes in incentives to invest in R&D that result when the market leading firm is deprived of its position. We show that under plausible assumptions like free entry or repeated market interactions there is a social value of market leadership and its mechanical removal by means of competition policy is likely to be harmful for society.     

Adjustment policies in socialist and private market economies

The article shows that although the outward-oriented newly industrializing countries suffered considerably greater external shocks than the inward-oriented NICs and two socialist countries, Hungary and Yugoslavia, this was offset severalfold by differences in economic growth rates. High growth rates were the result of output-increasing policies of export promotion and import substitution in the outward-oriented NICs whereas the inward-oriented NICs, Hungary, and Yugoslavia relied largely on external financing of the adverse balance-of-payments effects of external shocks that necessitated the application of deflationary measures once borrowing possibilities were exhausted.     

Endogenous market power

In this paper we develop a framework to study markets with heterogeneous atomic traders. The competitive model is augmented as we provide traders with correct beliefs about their price impacts to define equilibrium with endogenously determined market power and show that such equilibrium exists in economies with smooth utility and cost functions and is generically determinate. Traders? price impacts depend positively on the convexity of preferences or cost functions of the trading partners and are subject to mutual reinforcement. Compared to the competitive model, the volume of trade is reduced, and hence is Pareto inefficient. The price effects of non-competitive trading depend on the convexity of marginal utility or cost function.     

Competition and bargaining in vertical relationships with market uncertainty

We go through the decision to vertically integrate or its opposite, outsource, in an uncertain environment. We consider two different market strategies, price setting and quantity setting and two different vertical relationships: an (imperfectly) competitive one following Stackelberg mode and a more cooperative one with bargaining. In the first scenario, with certainty, price and quantity settings are alike, while with uncertainty the ranking changes. If a bargaining framework is adopted instead, quantity setting under uncertainty leads to an asymmetric distribution of realized gains along the vertical chain. Price setting turns out to be more equitable for firms and preferable even by consumers.

Firm-specific cost savings and market power

Summary. We report a policy experiment that illustrates a potential problem of using historical pass-through rates as a means of predicting the competitive consequences of projected firm-specific cost savings in antitrust contexts, particularly in merger analysis. The effects of cost savings on welfare can vary vastly, depending on how the savings affect the industry supply schedule. In a capacity-constrained price-setting oligopoly, we observe that cost savings can overwhelm behaviorally salient market power incentives when the savings affect marginal (high cost) units. However, cost savings of the same magnitude on an infra-marginal unit leave market power unchanged.     

Community rating and the market for private non-group health insurance

Prior research on adverse selection in health insurance markets has found only mixed evidence for adverse selection in group settings. We examine the impact of state community rating regulations enacted in the 1990s, which greatly limited insurers' ability to risk rate premiums, to determine if adverse selection is more evident in non-group insurance markets. Using data from large, national surveys we find evidence of a shift to a less healthy pool of non-group enrollees as a consequence of community rating. Community rating made healthy people 20 to 60% less likely to be insured by non-group health insurance; in addition, we found evidence that young and healthy people were 20 to 30% more likely to be uninsured as a result of community rating. We also find evidence that individuals in poor health were 35 to 50% more likely to be insured in the non-group market, but only limited evidence suggesting that persons in poor health were less likely to be uninsured. Our results are further supported by findings suggesting that non-group enrollees were sicker as a result of the community rating laws. Lastly, we find evidence suggesting that HMO penetration in the non-group market increased disproportionately in states that implemented community rating relative to states that did not.     

Downstream price-cap regulation and upstream market power

Under “partial separation,” it is increasingly common for a utility’s upstream affiliate (e.g., an electric generation supplier) to be unregulated while its downstream affiliate (e.g., the distribution company offering retail service) is subject to regulation. When choosing the optimal form of downstream regulation, regulators may be confronted with the potential exercise of market power by the upstream affiliate. This paper finds that the imposition of a downstream price cap with an appropriate profit-sharing rate can eliminate the upstream affiliate’s exercise of market power. However, it is less desirable to fully mitigate affiliate market power when upstream rivals also behave strategically.      

Organizational choices for efficiency and market power

We examine the role of strategic consideration in the choice of organizational structures characterizing large corporations. These considerations bridge the gap between the research on transaction costs and organizational forms and the research on strategic entry deterrence and threats. An illustrative model is presented and we derive propositions which look promising for providing empirical benchmarks.     

Modelling upstream and downstream market power in bilateral oligopoly

This article develops a general model that estimates market power exertion in a bilateral market relationship for processors and retailers where each may also have market power in their primary input market and output markets, respectively. Monte Carlo experiments are used to generate industry data for market structures such as perfect competition, monopoly, monopsony, bilateral imperfect competition with an integrated processor/retailer, bilateral imperfect competition with separate processor and retailer, and bilateral imperfect competition with four adjacent upstream and downstream markets. Then, new empirical industrial organization models are estimated using the data with models that match the market structure under which the data were generated (true) and with models that reflect alternative market structures (alternative). The general model is derived using the production function approach without imposing the fixed proportion assumption. Monte Carlo simulation results indicate that the general model is preferred to alternative models that presume competitive behaviour by processors in primary input procurement and by retailers in the output market. Results indicate that less flexible models lead to biased market power estimates in the presence of market power in the corresponding input and output markets.     

Taxation and market power when products are durable

Empirical studies suggest that industries hardest hit by government regulations, such as pollution regulations, are both highly concentrated and manufacture durable products. We analyze a two-period durable goods monopoly model where the firm faces government restrictions in the form of pollution or excise taxes. In contrast to non-durable monopolistic industries, we show that taxes on pollution or an excise tax on output may increase a durable goods monopolist's commitment ability and market power. Indeed, any policy which restricts future output may have the perverse effect of increasing a monopolist's bargaining power with buyers and enhance their profits.The authors would like to thank several anonymous referees and the editor for helpful comments and suggestions on earlier drafts of the paper. Of course, any remaining errors are the sole responsibility of the authors.     

Financial openness,market structure and private credit: An empirical investigation

Consistent with recent theoretical models, this paper finds that financial openness has a positive effect on private credit in economies characterized by a competitive banking sector, but that this effect vanishes and even becomes negative in economies with imperfect banking competition.     

Competition and monopoly of Chinese rural groundwater market：structure and determinants

China is facing severe problem of water scarcity.Agricultural sector,the main consumer of water resource,has remarkably changed its institutions on water resource deployment,due to heavy environmental pressure.As a new and spontaneous institution,groundwater market has developed rapidly in northern China,and has impacts on waterusing behaviors and benefits of farmers.Using household survey data from Hebei and Henan in 2007,this paper attempts to pin down the development and operating of groundwater market in rural China.We focus on the monopoly and competition in the market.Empirical analysis reveals that Chinese farmers are trying to make rational decision when they compete with others in groundwater market.In general,monopoly is not fierce in Chinese rural groundwater market,with great variations among different villages and even different tubewells within one village.Tubewell costs,regulation and the density of tubewells are the main determinants that affect monopoly level of groundwater market.To make water market benefit more and more farmers of low income,corresponding policies are needed to modify its development in the future.     

Health insurer market power and primary care consolidation

This paper analyzes how health insurance market concentration impacts the market structure of primary care physicians. In more concentrated insurance markets, physicians are found to work in larger practices and their practices are more likely to have a hospital with an ownership interest. Physicians are also less likely to report being in a competitive physician market, consistent with practice consolidation. Our results suggest that consolidation in insurance markets impacts the competitive structure of physician markets.     

Competition and confidentiality: Signaling quality in a duopoly when there is universal private information

We model non-cooperative signaling by two firms that compete over a continuum of consumers, assuming each consumer has private information about the intensity of her preferences for the firms' respective products and each firm has private information about its own product's quality. We characterize a symmetric separating equilibrium in which each firm's price reveals its respective product quality. We show that the equilibrium prices, the difference between those prices, the associated outputs, and profits are all increasing functions of the ex ante probability of high safety. If horizontal product differentiation is sufficiently great then equilibrium prices and profits are higher under incomplete information about quality than if quality were commonly known. Thus, while signaling imposes a distortionary loss on a monopolist using price to signal quality, duopolists may benefit from the distortion as it can reduce competition. Finally, average quality is lower since signaling quality redistributes demand towards low-quality firms.     

内部劳动力市场对民营企业人力资本积累的影响分析

人才短缺已经成为制约民营企业发展的第二个主要障碍,企业能否创造一个有利于吸引、培养、使用和留住人才的机制是解决人才短缺的关键.本文通过内部劳动力市场理论,分析内部劳动力市场这种就业制度安排对民营企业人力资本积累的影响,为民营企业解决人才短缺问题提供新的思路.     

A market mechanism for electric power transmission

As competition is introduced into the electric power industry, access and pricing policy for transmission will play a pivotal role in shaping future market structure and performance. The externalities associated with the loop flow phenomenon in an electric power network constitute a significant barrier to the formation of efficient markets for electricity and transmission services. In this paper, we present a new approach to the design of an efficient market mechanism for transmission access that resolves these externalities. Under a trading rule that combines the Coasian and the Pigouvian principles to resolution of externalities, property rights are defined so that a competitive market could be established for transmission services and electricity to achieve a social optimum within a power pool. We characterize a dynamic trading process which is Lyapunov stable and always converges to a competitive equilibrium. Finally, we discuss some practical applicability and long-term investment issues.The authors are indebted to Charles Clark, Shmuel Oren, Pravin Varaiya, Robert Wilson, Felix Wu, and two referees for helpful comments and suggestions and particularly to William Hogan for many incisive comments and constructive suggestions. An earlier version of this paper was presented at the Annual Meeting of International Association of Energy Economists in Washington D.C., June 20, 1995, and at the Joint LBS/IFORS International Symposium on Energy Models for Policy and Planning in London on July 18–20, 1995. This paper does not represent the views of EPRI or its members. The authors remain solely responsible for the errors in this paper.