The Effect of Mergers on Innovation

We study the effect of a merger on R&D activity in a dynamic model with uncertainty about the feasibility of innovation. The merger has three effects: It may reduce the number of follow-up innovations (cannibalization effect), increase the probability of the first game-changer innovation (appropriability effect), and bring this innovation forward in time (informational effect). The model suggests mergers are more desirable when R&D outcomes are highly uncertain, but less so when the innovation path is clearer. A surprising policy implication is that the benefit of the merger may be higher if the first and subsequent innovations are closer substitutes. (JEL D21, D83, G34, O31)