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26 Stan. J.L. Bus. & Fin. 65 (2021)
Competition in Digital Markets: A Review of Expert Reports

handle is hein.journals/stabf26 and id is 71 raw text is: Competition in Digital Markets: A Review of Expert Reports Filippo Lancieri' Patricia Morita Sakowski Abstract Digital markets are at the forefront of competition policy. Over the past five years, antitrust regulators around the world have opened many investigations on digital platforms and issued or commissioned dozens of studies or expert reports that are focused on understanding the general competitive dynamics of markets such as online search, social media, e-commerce/marketplaces, and mobile operating systems. These studies and reports represent the forefront of our current understanding of how to adapt antitrust policy to the digital era. However, much of their wealth of knowledge is lost because these documents, which add up to thousands of pages of text, figures and tables, have been scattered around the websites of different competition agencies. This literature review consolidates the knowledge of twenty-two reports and studies on * Fellow, Stigler Center for the Study of the Economy and the State, U Chicago Booth; JSD Candidate, The University of Chicago Law School. After law school Filippo worked as an attorney in a law firm that represented several digital platforms, including Google and Facebook. This work ceased many years ago and took place before he decided to pursue an academic career. While we do not believe this past experience biases this paper, full disclosure is important. ** Deputy Superintendent at the Administrative Council for Economic Defense (CADE). This Review is based on an international benchmark of expert reports on competition in digital markets prepared for CADE, the Brazilian antitrust authority. It is part of a consulting contract between CADE, and the United Nations Development Programme (UNDP) to help better prepare CADE to enforce Brazilian antitrust laws in digital markets. This document is intended to be a literature review of different expert reports and under no circumstances should be taken as expressing the view of CADE or Patricia's personal views on any pending matters or investigations. All errors are our own. We would like to thank CADE and the UNDP for funding this work; Wenting Tao, Morgan Smiley and Fiona Hayman for excellent comments and careful editing and Guilherme Mendes Resende, Felipe Mundim, Camila Pereira Bastos, and Maria Cristina Attayde for equally helpful comments. 65

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