In some industries, monopoly is natural. One provider can serve the relevant demand cheaper than two or more firms. If the monopoly is not contestable, i.e. not controlled by a credible threat of entry, regulation is necessary. The essential facilities doctrine is one such regulatory tool. It...

In some industries, monopoly is natural. One provider can serve the relevant demand cheaper than two or more firms. If the monopoly is not contestable, i.e. not controlled by a credible threat of entry, regulation is necessary. The essential facilities doctrine is one such regulatory tool. It...

Local telephone companies have long been regulated as natural monopolies. However, technological innovation and the prospect of falling regulatory barriers to entry now expose some portions of the local exchange to competition from cable television systems, wireless telephony, and rival wireline...

The European Commission (EC) and the European Courts have being reaffirming in the Deutsche Telekom and Telefónica cases that guide-prices established by sector regulators upon electronic communications incumbents cannot per se exclude that conducts with anticompetitive foreclosure effects,...

The aim of this paper is threefold. First, it seeks to contribute to a more fine-grained comparison between US antitrust and EU competition law by (selectively) including state antitrust laws as well as laws that pursue objectives different from the antitrust laws but interfere with the aims of...

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

Complexity science is widely used across the policy spectrum but not in antitrust. This is unfortunate. Complexity science enables a rich understanding of competition beyond the simplistic descriptions of markets and firms proposed by neoclassical models and their contemporary neo-Brandeisian...

Hybrid governance structures between markets and hierarchies in many industries, e.g., in energy and telecommunications, challenge antitrust and regulation policy. The paper focuses on the theoretical and methodological basis provided by the New Institutional Economics (NIE) for analyzing the...

On Friday, April 11th, 2008, the second leg of the Antitrust Marathon took place. A number of antitrust practitioners and scholars from Europe and North America met at the Competition Appeal Tribunal in London to discuss the comparative state of monopolization law. This meeting, co-sponsored by...