The 2010 US Horizontal Merger Guidelines offer a substantially modified framework for evaluating coordinated effects. Can we rationally anticipate that this will stimulate the same boom in the antitrust economics of coordinated merger effects as that spurred by the unilateral effects section in...

We address the question whether and on what conditions will an access-seeker be provided with access to a necessary input. We study this question in a model in which multiple vertically-integrated firms - potential access providers - compete. Although it might seem in such a setting that...