In dealing with telecom operator and internet mergers in the late 1990s the European Commission adopted a pessimistic view of competition based on the then emerging theory of network effects. This paper takes a short and critical look at the Commission's use of network effects theory, and its...

The following is a compilation of book reviews and notices of notable books I have prepared over the past two years as U.S. Book Review editor for the World Competition Law & Economics Review and/or for the web site for the Institute for Consumer Antitrust Studies at Loyola University Chicago....

We test whether firms use incompatibility strategically, using data from ATM markets. High ATM fees degrade the value of competitors' deposit accounts, and can in principle serve as a mechanism for siphoning depositors away from competitors or for creating deposit account differentiation. Our...

In this article, I explain the inadequacy of our current state of knowledge regarding the effectiveness of antitrust policy towards mergers. I then discuss the types of data that one must collect in order to be able to perform an analysis of the effectiveness of antitrust policy. There are two...

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...

In August 2007 the United Kingdom experienced its first bank run in over 140 years. Although Northern Rock was not a particularly large bank (it was at the time ranked 7th in terms of assets) it was nevertheless a significant retail bank and a substantial mortgage lender. In fact, ten years...

Increasing price levels, high price volatility and the suspicion of collusive behavior are important topics of public debates on competition in retail gasoline markets in many countries. Several governments and competition authorities introduced fuel price regulations in form of restrictions on...

This paper discusses the treatment of Ocwen Financial Corp by the Consumer Financial Protection Bureau (CFPB) since 2012 and also examines the actions of private investors. The paper suggests that the CFPB has been overly harsh in its treatment of Ocwen, both measured by the amount of fines and...

Do healthcare providers pick their patients? This paper uses patient-level administrative data on skilled nursing facilities in California to estimate a structural model of selective admission practices in the nursing home industry. I exploit within-facility covariation between occupancy and...