In a typical bank credit card transaction, the merchant's bank pays an interchange fee, collectively determined by all participating banks, to the cardholder's bank. This paper shows how the interchange fee balances charges between cardholders and merchants under imperfect competition. The...

Software platforms are the invisible engines that have created, touched, or transformed nearly every major industry for the past quarter century. They power everything from mobile phones and automobile navigation systems to search engines and web portals. They have been the source of enormous...

The MIT Sloan School of Management, as conceived by the legendary General Motors chairman Alfred P. Sloan, was founded in 1952 to draw on the scientific and technical resources of MIT and approach the problems of management with the rigorous research practices for which MIT was famous. Fifty...

US antitrust policy takes as its objective consumer welfare, not total economic welfare. With that objective, Joe Bain's definition of entry barriers is more useful than George Stigler's or definitions based on economic welfare. It follows that economies of scale that involve sunk costs may...

This essay surveys the economic literature on interchange fees and the debate over whether interchange should be regulated and, if so, how. We consider, first, the operation of unitary payment systems, like American Express, in the context of the recent economic literature on two-sided markets,...

Software platforms are the invisible engines that have created, touched, or transformed nearly every major industry for the past quarter century. They power everything from mobile phones and automobile navigation systems to search engines and web portals. They have been the source of enormous...

The utilities price regulation in the United States has historically been made by a state commission. Nevertheless, this regulatory system does not incentive cost controls within the utilities. In order to rectify this situation the regulatory commissions have changed their view to one of...

Using a simple model of patent licensing followed by product-market competition, this paper investigates several competition policy questions related to standard-setting organizations (SSO's). It concludes that competition policy should not favor patent-holders who practice their patents against...