The fundamental contribution of the paper is to contest the view that greater market contestability has non-negative effects on market performance. In a model where employees pose a threat of potential entry, we demonstrate that a reduction in barriers to entry causes no fall in industry price...

This paper presents a model of private bilateral and multilateral peering arrangements between Internet backbone providers when the network is congested. We study how different forms of interconnection and the competitive conditions of the market affect backbones' investments in network and...

The Microsoft antitrust case focused public attention on the role of antitrust enforcement in preserving the forces of innovation in high-technology markets. Traditionally, regulators focused on whether companies artificially hiked prices or reduced output. Now, they're increasingly likely to...

We analyze the central economic issues raised by U.S. v Microsoft. Network effects and economies of scale in applications programs created a barrier to entry for new operating system competitors, which the combination of Netscape Navigator and the Java programming language potentially could have...

Antimonopoly laws must contain effective provisions for the attack of exclusionary behavior by firms with market power while at the same time not attacking procompetitive behavior by entrants or incumbents. This paper suggests seven textual criteria by which a new law may be evaluated in its...

Coordination Failure Diagnostics (CFD) is a model that analyses real market processes with the help of time pattern analysis and investigates whether they operate efficiently (See www.wiwi.uni-muenster.de/cfd). The CFD cartel-audit should enable the detection of cartels via characteristic market...

Three years ago, the Antitrust Division and the Federal Trade Commission revised their Horizontal Merger Guidelines to articulate in greater detail how they would treat claims of efficiencies associated with horizontal mergers: claims that are frequently made, as for instance in the recently...

This paper investigates the interplay of investment irreversibility, predatory behavior, and limited liability in a duopoly with aggregate demand uncertainty. We find that limited liability and investment irreversibility is likely to produce predatory behavior in very competitive industries in...