Economists widely agree that, absent sufficient efficiencies or other offsetting factors, mergers that increase concentration substantially are likely to be anticompetitive. Further, holding everything else equal, the magnitude of anticompetitive effects tends to be larger, the larger is the...

We examine the effects of merger and merger policy on a potential entrant’s pre-merger investment incentives. We establish conditions under which the possibility of merger can induce an entrant to inefficiently imitate an incumbent’s product instead of innovating with a more differentiated...

"Antitrust enforcement has long been focused on price competition-approving or denying mergers based on whether or not it would create or reduce opportunities for consumers to be able to "shop around" for the lowest prices when it comes to internet access, cable subscriptions, airfare, and so...