The aim of this paper is to summarize the theory of (implicit) collusion in the framework of infinitely repeated games, and in particular, to survey the comprehensive literature exploring which factors make collusion easier or more difficult to sustain. On this basis, the existing empirical...

This rejoinder responds to some issues raised in the comments to my survey on collusion. The focus is on different assumptions on the punishment phase and on some aspects of competition policy. Copyright Springer Science + Business Media, Inc. 2005