The prohibition of certain types of anticompetitive unilateral conduct by firms possessing a substantial degree of market power is a cornerstone of competition law regimes worldwide. Yet notwithstanding the social costs of monopoly modern legal regimes refrain from prohibiting it outright....

The antitrust laws of the United States have, from their inception, allowed firms to acquire significant market power, to charge prices that reflect that market power, and to enjoy supra-competitive returns. This article shows that this policy, which was established by the U.S. Congress and...

India's Competition Act (2002) was amended in 2007, modifying inter alia the Act's thresholds for merger review, and requiring mandatory rather than voluntary notification of mergers above the revised thresholds. This created considerable opposition in international business and legal circles....

By serving as a key revenue source for online content providers, online advertising has been instrumental in the development of innovative websites. Continued innovation among content providers, however, depends critically on the competitive provision of online advertising. Suppliers of online...

This document (of 308 pages) comprises the proceedings of an OECD roundtable on mergers in financial services (bank mergers). The number and size of bank mergers have recently been on the increase in many OECD countries and this seems to be related to four interactive forces: regulatory reform;...

Most mergers involve multiple markets. The potential for settlement can vary by the fraction of the overall deal attributable to the markets of concern. (i.e., by the “overlap”). If an antitrust agency challenges a merger having only a small overlap, negotiating a settlement is very likely;...

This paper uses merger simulations to predict post-merger prices for six major airline mergers from the 1980's, and compares these predictions with actual post-merger prices. Simulations which incorporate varying degrees of post-merger information allow us to decompose the actual price changes...

One of today’s most pressing antitrust questions is how antitrust should address the conduct of dominant technology companies. Once considered untouchable by antitrust law, these technology behemoths are now the subject of growing calls for antitrust breakup, including through actions by the...

Is there a problem with large technology firms, or platforms, purchasing nascent competitors and suppressing competition before they can mature into vibrant competitors? Further, if there is a problem, are the current antitrust laws and the enforcement of those laws sufficient to combat the...

Merger remedies are an area of increasing complexity around the world. They are also an area of increased focus by competition authorities both with regard to process (particularly coordination) and substance. Mergers in high technology (high tech) markets remain an area in which there seems to...