Antitrust Appraisal of Mergers in Oligopolistic Markets

In this paper we ask whether and how there can be room for the notion of dominance to be sensibly applied to mergers in non-collusive oligopolies. We come to the somewhat unexpected conclusion that, even in oligopoly, the European test of 'dominance' is much closer to the US test of 'substantial lessening of competition' than is usually thought to be.