It may have come as a shock to many economists, especially those in academia, to learn that the Antitrust Division of the U.S. Department of Justice (DOJ) has been investigating alleged price fixing and information exchange of financial aid among 23 prestigious east coast colleges and...

The DOJ/ FTC Vertical Merger Guidelines (VMGs) were adopted by the FTC in June 2020 by a party-line 3-2 party line over the dissent of the Acting Chair. One might expect that the VMGs will be withdrawn and/or revised, now that there is a Democratic majority. Revision is appropriate because the...

This short note prepared for an OECD meeting in June 2021 examines several antitrust issues involving analysis of potential competition. While the analysis is not new, it is still useful to collect them together in a unified fashion to show how they are related. In this regard, all the analysis...

This article analyzes the effect of credible capacity limitation on the interaction between an incumbent and an entrant. The prospect of price competition deters entry by a less efficient firm with unlimited capacity. If, however, the entrant practices "judo economics" and limits its capacity...

The Chamberlinian monopolistically competitive equilibrium has been explored and extended in a number of recent papers. These analyses have paid only cursory attention to the existence of an industry outside the Chamberlinian group. In this article I analyze a model of spatial competition in...