This chapter analyzes the private rationale and the social costs and benefits of market foreclosure, here defined as a firm's restriction of output in one market through the use of market power in another market. The chapter first focuses on vertical foreclosure (in which full access to a...

This paper shows how the principal-agent approach, applied to the study of relationships between producers and retailers, can yield new insights in the analysis of vertical restraints such as resale price maintenance, exclusive territories agreements, or tieins... The paper surveys some alrealy...

We develop a model of unregulated competition between interconnected networks and analyze the mature and transition phases of the industry in this deregulated environment. Networks pay (negotiated or regulated) access charges to each other and compete in prices for customers. We show that a...

Our companion article developed a clear conceptual framework of negotiated or regulated interconnection agreements between rival operators and studied competition between interconnected networks, under the assumption of nondiscriminatory pricing. This article relaxes this assumption and allows...

[eng] This note aims at clarifying the debate on « abnormally low prices », where many arguments rely on predatory pricing behaviour. It thus offers a survey of : —predatory pricing theory, —detection problems (are they different from collusion or dominant position detection problems ?)...

This chapter analyzes the private rationale and the social costs and benefits of market foreclosure, here defined as a firm's restriction of output in one market through the use of market power in another market. The chapter first focuses on vertical foreclosure (in which full access to a...

Professor Elhauge’s arguments are used to motivate a vision of the priorities for antitrust enforcement that may be seriously misguided if his optimism is unfounded.