Frontiers in the Study of Japanese Competition Policy

Koki Arai is Professor and Dean of the Faculty of Business Studies at Kyoritsu Women’s University in Tokyo. His research focuses on law and economics, industrial organization, and competition policy, with particular emphasis on digital-market regulation, public procurement, and the relationship between legitimacy and enforcement design. Before entering academia, he served in senior positions at the Japan Fair Trade Commission, including Head of the Economic Research Office and Deputy Director of the Competition Policy Research Center, and also worked as First Secretary at the Embassy of Japan in the United States. He previously held a faculty appointment at Osaka University’s Institute of Social and Economic Research. He earned his Ph.D. in Economics from Osaka University and a B.A. in Economics from Waseda University. His recent publications include Law and Economics in Japanese Competition Policy (Springer, 2019) and Digitalization and Competition Policy in Japan (Springer Nature, 2024).

• Chapter 1. The Introduction.- Part 1. Basic theory of Competition Policy.- Chapter 2. Comparative Competition Law.- Chapter 3. High-Tech Regulation Methodology.- Part 2. Digital Economy and Competition Policy.- Chapter 4. Information and Competition Law.-  Chapter 5. E-commerce Case Studies.- Chapter 6. Ex-Ante vs Ex-Post.-  Chapter 7. Data and Competition Law.- Part 3. Public Procurement and Competition.- Chapter 8. Market Size and Bidding.- Chapter 9. Low Bid Standards.-Chapter 10. Price and Quality.- Chapter 11. Cartels under Deflation.- Chapter 12. Public Reporting in Antitrust.- Part 4. New Technologies and the Future of Competition Policy.- Chapter 13. Language Models and Law.- Chapter 14. Evaluating Robot Guidelines.- Chapter 15. International Merger Cooperation.- Chapter 16. Future of Competition Policy.