This is a survey of the economic principles that underlie antitrust law and how those principles relate to competition policy. We address four core subject areas: market power, collusion, mergers between competitors, and monopolization. In each area, we select the most relevant portions of...

We analyze the competitive effects of backward vertical integration by a partially vertically integrated firm that competes with non-integrated firms both upstream and downstream. We show that vertical integration is procompetitive under fairly general conditions. It can be anticompetitive only...

Monopoly - it's not just a game : the roots of America's anti-monopolist movement -- Don't trust the trusts : James J. Hill, the Gilded Age, and the labor movement -- A heartland rebellion : the grangers, a political prairie fire, and a republican authors the Sherman Act -- Teddy Roosevelt and...

American markets, once a model for the world, are giving up on competition. Thomas Philippon blames the unchecked efforts of corporate lobbyists. Instead of earning profits by investing and innovating, powerful firms use political pressure to secure their advantages. The result is less efficient...