This paper analyzes the competitive effect of a new product introduction. We break the overall competitive effect into two parts: the effect on the prices of existing products due to increased competition, and the effect of having additional product variety. Using data from both before and after...

The 1992 Horizontal Merger Guidelines, issued by the U.S. Department of Justice (DOJ) and the Federal Trade Commission (FTC), suggest that relevant markets for merger analysis may be defined for classes of customers on whom a hypothetical monopolist of the merging firms' products would likely...

In this paper, we discuss the econometric models put forward by both sides in the FTC v. Staples case and explore why those models canceled each other out, leaving the documents to play a central role in the court's decision