Bertrand Competition with an Asymmetric No‐discrimination Constraint

Regulators and competition authorities often prevent firms with significant market power, or dominant firms, from practicing price discrimination. The goal of such an asymmetric no‐discrimination constraint is to encourage entry and serve consumers' interests. This constraint prohibits the firm with significant market power from practicing both behaviour‐based price discrimination within the competitive segment and third‐degree price discrimination across the monopolistic and competitive segments. We find that this constraint hinders entry and reduces welfare when the monopolistic segment is small.     

自然垄断产业垄断的"自然性"探析

一般认为,在自然垄断产业中的竞争性业务领域中,应当放松管制,引入竞争,而网络部分的生产经营则依然是自然垄断的领域,政府在这一领域仍然要实行进入管制,限制竞争,以获取规模经济或范围经济带来的利益。本文认为,在自然垄断领域中是否应当保持进入管制政策,不能简单地按照传统的理论假设进行推论,而是要对有关产业管制的成本和收益进行实证分析。本文提出了应当在自然垄断领域内引入竞争的理论假说,并用电信产业的统计数据对这个假说的理论模型进行了验证。     

论垂直价格挤压下的接入定价规制

在自然垄断产业引入竞争的过程中,独占传输网络的纵向一体化垄断厂商可能对下游市场新进入者实施接入价格挤压。接入价格挤压从属于价格歧视。尽管一定条件下的接入价格挤压具有正向的竞争效应,但垄断厂商将具有同等效率或更高效率的独立厂商驱逐出市场则应该受到规制。接入价格规制包括政府直接规制定价和反垄断法间接规制定价。直接规制定价中整体价格上限较为可取,而反垄断法间接规制需要采用基于福利后果分析的合理推定原则,但从短期来看采用直接规制更有效率。最后提出了完善我国自然垄断产业接入定价规制的相关政策建议。     

Bertrand equilibrium with differentiated products considering fixed costs: Korean price regulation in the mobile telephone industry

In some industries such as telecommunications and electricity, the fixed costs are so high that competition is not sustainable without considering the fixed cost in pricing. The sustainability of competition is as important as enhancing competition when an industry is in the transitional period from being a monopoly owned or managed by the government to a competitive market structure driven by the market. A price competition model with asymmetric firms and product differentiation is considered in which firms compete with a normal profit constraint. The constraint is related to the sustainability of competition and can be realized through price regulation. With this constraint, firms gain only normal profit in equilibrium despite the asymmetry, and consumer surplus is maximized. The equilibrium is meaningful in defining the industry performance intended through the regulation. Moreover, the price regulation of the Korean mobile telephone market is considered to discuss any implications of this equilibrium.     

不完全信息与网络产业激励性规制改革

规制体制改革的核心是解决信息不对称下的最优激励问题，规制体制设计的关键就是要设计有效的激励合约，为企业提供适当的激励以达到成本效率，从激励角度看，价格上限规制的效率最高，竞争是重要的激励性体制，网络产业竞争体制形成的关键是约束在位运营商排斥竞争行为和建立有效的互联资费政策。     

Lessons from the deregulation transition in Chile's local telephony market

There is no experience in the world where entry to local telephony has been as significant as in Chile. This paper addresses two related questions: (i) whether the local telephony segment in Chile is competitive enough so as to deregulate rates and (ii) whether competition thus far achieved could be at risk in the case where asymmetric regulation is ended. The paper suggests that the market is competitive enough, that the regulation mechanism is extremely costly, and that subsidizing entry in order to have infrastructure competition is not necessary. It concludes that deregulation of consumer's rates would be in their own consumers’ interest.     

Global and political strategies in deregulated industries: the asymmetric behaviors of former monopolies

In deregulated industries former monopolies often adopt asymmetric behaviors: these firms impede the entry of foreign competitors in their home market, especially using defensive political strategies, and, at the same time, aggressively develop international strategies in foreign markets. To account for this behavior, I develop a game theoretic model involving three players: the former monopoly, its home government, and the host government of the country into which the firm wants to enter. I show first that there are in fact different asymmetric strategies that former monopolies can use in such a setting, and that a global strategy cannot always be implemented by those firms because of cooperation issues between the two governments. I also study the conditions under which these issues can be solved and show that this can happen only when the firm develops a political strategy that integrates both defensive and offensive activities. Overall, this paper therefore argues that asymmetric strategies are not always adopted to maintain monopoly rents but are also dictated by the nature of the international relationships between the governments involved. Copyright © 2003 John Wiley & Sons, Ltd.     

Regulation,enforcement, and entry: Evidence from the Spanish local TV industry

Although we have many tools to understand the effect of regulation on firm entry, we know little about the importance of actual regulation enforcement. For this purpose, this paper uses data from Spain's local television industry from 1995 through 2001, which provide a unique opportunity for examining how firms' profitability changes with the introduction of regulation and a posterior liberalization. During this period, the local television industry transitioned from a state of alegality (no regulation in place) to being highly regulated and finally to being informally deregulated. Using a firm entry model from Bresnahan and Reiss (1990, 1991a,b), we estimate local TV station entry thresholds by number of entrants across years. We find the entry threshold in 1998 increased relative to the thresholds in 1995 and 2001, suggesting that entry was less attractive during the period when the local TV industry was highly regulated. We decompose the entry thresholds into the fixed costs and variable profits, and find the fixed-cost ratios increase in 1998 and stay constant in 2001. Meanwhile, we find an increase in the variable-profit ratios in 2001. These findings suggest that the informal deregulation did not invalidate the regulation introduced in 1995 on the cost side. However, the deregulation seemed to have an impact on variable profits through how local TV stations competed.     

EXCLUSIVE QUALITY*

In the case of vertically differentiated products, Bertrand competition at the retail level does not prevent an incumbent upstream firm from using exclusivity contracts to deter the entry of a high‐quality rival. Indeed, because of differentiation, the incumbent's inferior product is not eliminated upon entry. Due to the resulting competitive pressure, a retailer who considers rejecting the exclusivity contract expects to earn much less than the incumbent's monopoly rents. Thus, in equilibrium, the incumbent can always offer high enough an upfront payment to induce all retailers to sign the contract and achieve exclusion. This is true under linear pricing for intermediate levels of entry costs, and with two‐part tariffs even in the absence of entry costs.     

软件供给反垄断规制研究

论文探讨了在软件产品经营中存在的市场控制、标准锁定和捆绑销售等方面的垄断。首先,从广义价格机制理论分析限制软件市场控制型垄断的一般政策选择,即政府对软件市场的规制,应把重点放在创造竞争的环境上,让市场竞争去解决政府规制中难以解决的规制信息不对称、信息有意隐瞒与定价规制激励的难题。其次,分析标准性垄断和捆绑性垄断的经济学性质,指出政府对标准垄断规制应防止企业利用合理的标准垄断去施行有意的市场控制,对捆绑垄断应采取严格惩处企业单纯利用捆绑垄断来获得市场力量等规制措施。     

Price asymmetries and the path dependence of market power: Evidence from the U.S. airline industry

This paper uncovers price asymmetries across oligopolistic and monopolistic markets that are seemingly identical in structure but different in competitive history. This is done by identifying “quiet life” markets that have not (yet) experienced a change in structure, and “non-quiet life” markets that have been disrupted by firm entry and/or exit. Using a long panel dataset from the U.S. airline industry, we find that quiet life duopolies price significantly higher than duopolies that come about by entry in monopoly, and that quiet life monopolies price significantly lower than monopolies that come about by exit in duopoly. We show that the path towards a particular market structure matters for the determination of prices and explore several mechanisms that likely explain the price asymmetries, including engagement in anticompetitive behaviour, adjustment behaviour to market structure changes, and the cost heterogeneity of competing firms.     

Does the fourth entrant make any difference?: Entry and competition in the early U.S. broadband market

We study the importance of sunk costs in determining entry conditions and inferences about firm conduct in an adapted Bresnahan and Reiss (1991, 1994) framework. In our framework, entrants incur sunk costs to enter, while incumbents disregard these costs in deciding on continuation or exit. We apply this framework to study entry and competition in the local U.S. broadband markets from 1999 to 2003. Ignoring sunk costs generates unreasonable variation in firms' competitive conduct over time. This variation disappears when entry costs are allowed. Once the market has one to three incumbent firms, the fourth entrant has little effect on competitive conduct.     

The Political Economy of Price Cap Regulation

The last decade has witnessed a dramatic substitutionof price cap regulation for rate-of-return regulationin the telecommunications industry. The 1996Telecommunications Act empowers state regulators toset the terms of competitive entry in local telephonemarkets. We investigate whether the form of regulationendogenously affects the regulator's behavior withrespect to competitive entry. The evidence revealsthat regulators in price cap jurisdictions tend to setmore liberal terms of entry in comparison withregulators in rate-of-return jurisdictions. Thissuggests that price cap regulation suffers fromincomplete contracting, undermining the potentiallysuperior incentive properties of this importantregulatory reform.     

Another Look at Local Franchise Regulation and State Commission Regulation: Do They Really Matter?

While economic theories suggest that firm behavior may diverge over time under local franchise regulation and state commission regulation, empirical studies on that issue are scant. By exploiting the facts that: both types of regulation coexisted in the cable television industry prior to federal deregulation; and the starting years of cable systems varied widely, this paper approaches the issue. Two empirically testable hypotheses are set. First, market power exercised varies with system ages. Second, the age-dependent path of the market power exercised differs under local franchise regulation and state commission regulation. The paper finds evidence supporting these hypotheses. Though some qualifications are required due to the use of cross-sectional instead of panel data, the evidence presented here is highly suggestive that regulator-firm relations have played a role and might be a cause of the differing monopoly powers exercised.     

Is exclusionary pricing anticompetitive in two-sided markets?

This paper studies the competitive effects of exclusionary pricing in two-sided markets. While formally showing that below-cost pricing on one market side can allow an incumbent firm to exclude a potential rival which does not have a customer base yet, the proposed model does not necessarily imply that below-cost pricing in such markets should be taken as anti-competitive conduct. Instead, I find that in sufficiently asymmetric two-sided markets, exclusion is always beneficial and if anything, there is too little of it in the sense that there are cases in which there is inefficient entry. Further, prohibiting below marginal cost pricing may destroy some socially efficient exclusion and worsen the problem of excessive (or inefficient) entry.     

Welfare losses under Cournot competition

In a market for a homogeneous good where firms are identical, compete in quantities and produce with constant returns, the percentage of welfare losses (PWL) is small with as few as five competitors for a class of demand functions which includes linear and isoelastic cases. We study markets with positive fixed costs and asymmetric firms. We provide exact formulae of PWL and robust constructions of markets were PWL is close to one in these two cases. We show that the market structure that maximizes PWL is either monopoly or dominant firm, depending on demand. Finally we prove that PWL is minimized when all firms are identical, a clear indication that the assumption of identical firms biases the estimation of PWL downwards.     

AN EMPIRICAL TEST OF THE RESOURCE-BASED THEORY: STRATEGIC REGULATION IN THE DUTCH AUDIT INDUSTRY

The resource-based view of the firm is a recent strategic management theory that seeks to identify the resources that may provide firms with a sustainable competitive advantage. This paper has two purposes. First, the paper relates strategic management arguments to parallel lines of reasoning in industrial organization theory and argues that strategic regulation is a major source of sustainable competitive advantage. The second purpose of the paper is to report the results of an empirical test of the resource-based theory on the basis of a longitudinal data set on the postwar history of the Dutch audit industry. A key determinant of this history proves to be strategic regulation, which stimulates demand for audit services and protects rent-producing resources.     

Creating Growth in New Markets: A Simultaneous Model of Firm Entry and Price*

Sales in a new market generally follow a hockey‐stick pattern: After commercialization, sales are very low for some time before there is a dramatic takeoff in growth. Reported sales takeoffs across products vary widely from a few years to several decades. Prior research identifies new firm entry or price declines as key factors that relate to the timing of a sales takeoff in new markets. However, this literature considers these variables to be exogenous and only finds unilateral effects. In the present article, new firm entry and price declines are modeled as being endogenous. Thus, the simultaneous relationship between price declines and firm entry in the introductory period of new markets when industry sales are negligible is studied. Using a sample of new markets formed in the United States during the last 135 years, strong support for a simultaneous model of price and firm entry is found: Price decreases relate to the competitive pressures associated with firm entry, and, in turn, firm entry is lower in new markets with rapidly falling prices. Furthermore, a key driver of firm entry during the early years of a new market involves the level of patent activity, and a key driver of price decreases is the presence of large firms. In contrast to the recommendations from other research, these results indicate that rapid price declines may further delay sales takeoff in industries by dampening new firm entry. Instead, rapid sales takeoffs in new markets come from encouraging greater innovative activity and the entry of large firms.     

Imperfect Tests and Natural Insurance Monopolies

In a housing insurance market buildings have different damage probabilities. High-risk houses need investment, low-risk houses don't. Insurers use imperfect tests to assess risks. The market is a natural monopoly: with more than one active insurer, high-risk house owners continue to apply to insurers until they are eventually assigned to the low-risk class. The natural monopoly need not be sustainable. In equilibrium the incumbent accommodates entry even when the natural monopoly is sustainable. We explain recent observations from Germany and Switzerland where damage rates and prices went up drastically after the transition from state monopolies to competitive environments.     

The Investment Behaviour of Firms in an Oligopolistic Setting

Industrial organization theory has identified strategic investment in capacity as an important element in competition in oligopolistic markets. In the paper we specify a model of oligopolistic investment behaviour, and test it with panel data for 114 firms in 15 narrowly defined UK manufacturing industries in the 1970s and 1980s. The industries are distinguished according to their market characteristics as fragmented, dominant firm and dominant group sectors. The results indicate behaviour which is noncooperative in fragmented sectors, cooperative in dominant group sectors and competitive in dominant firm sectors.