Discussion Papers on Ecosystems by Digital Platforms

Home >Japan Fair Trade Commission >CPRC Home >Report/Paper >

　Concerns have emerged about influential digital platform companies aggressively entering new markets that complement the activities in their main business domains, to strengthen their market positions by expanding their business networks, the so-called "ecosystems".
　Theoretical and empirical rationales are required to analyze competition within platform ecosystems and we have decided to explore the theme by publishing discussion papers on relating topics. First, we review the theoretical research on competition among digital platforms. Second, we consider the empirical methods available to evaluate the negative impacts of anticompetitive behavior.

Contents, Author	File(PDF)
"Preface: The formation and expansion of ecosystems by digital platform companies"（2023.1） MATSUSHIMA, Noriaki (Professor, Institute of Social and Economic Research, Osaka University and Director of the Competition Policy Research Center) UEDA, Shintaro (Deputy Director, Economic Analysis Office, General Affairs Division, General Secretariat, Japan Fair Trade Commission, the Competition Policy Research Center) NAKATA, Kensuke (General Affairs Division, General Secretariat, Japan Fair Trade Commission, the Competition Policy Research Center)	CPDP-89-1-E(PDF:435KB)
"Self-Preferencing by Platforms: A Literature Review"（2022.12. Revised 2023.2）　KITTAKA, Yuta (Assistant Professor (Specially Appointed), Hitotsubashi Institute for Advanced Study, Hitotsubashi University and Visiting Researcher of the Competition Policy Research Center) 　SATO, Susumu (Assistant Professor, Institute of Economic Research, Hitotsubashi University and Visiting Researcher of the Competition Policy Research Center) 　ZENNYO, Yusuke (Outstanding Professor, Institute for Advanced Research and Professor, Graduate School of Business Administration, Kobe University and Visiting Researcher of the Competition Policy Research Center)	CPDP-89-2-E-R(PDF:576KB)
"Relevant Markets and Market Power of Mobile Apps"（2022.12）　KAWAGUCHI, Kohei (Assistant Professor, Department of Economics, Hong Kong University of Science and Technology and Visiting Researcher of the Competition Policy Research Center) 　KURODA, Toshifumi (Associate Professor, Department of Economics, Tokyo Keizai University and Visiting Researcher of the Competition Policy Research Center) 　SATO, Susumu (Assistant Professor, Institute of Economic Research, Hitotsubashi University and Visiting Researcher of the Competition Policy Research Center)	CPDP-89-3-E(PDF:388KB)
"A note on conglomerate mergers: The Google/Fitbit case"（2023.1）　NAKAGAWA, Akihiko (Professor, Graduate School of Law, Hokkaido University and Visiting Researcher of the Competition Policy Research Center) MATSUSHIMA, Noriaki (Professor, Institute of Social and Economic Research, Osaka University and Director of the Competition Policy Research Center)	CPDP-89-4-E(PDF:496KB)