Digital (Killer?) Acquisitions -- by Florian Ederer, Regina Seibel, Timothy Simcoe

We thank Heski Bar-Isaac, El Hadi Caoui, Joshua Gans, Shane Greenstein, Alexander Hoagland, Mitsuru Igami, Hong Luo, Mario Leccese, Matt Marx, Matt Mitchell, Gordon Phillips, Merih Sevilir, Carl Shapiro, Daniel Sokol, Melanie Wallskog, Zi Yang Kang, and seminar audiences at Boston University, Competition Bureau Canada, IIOC, MIT, NBER, Northwestern Antitrust Conference, University of Toronto, University of Pennsylvania, Utah Antitrust Summit, USC-Cambridge Law & Economics, Washington University in St. Louis, and WEFI for helpful comments. Ariel Hsieh, Rachelle Lang, Travis Meyer, Nathan Shekita, Meg Snyder, and Davin Wang provided outstanding research assistance. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research.