A game theoretic analysis of profit-enhancing entry

• Project/Area Number: 25780162
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Economic policy
• Research Institution: Ryukoku University (2016-2017); Osaka University (2013-2015)
• Principal Investigator: ISHIBASHI Ikuo 龍谷大学, 経済学部, 准教授 (30365035)
• Project Period (FY): 2013-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥2,600,000 (Direct Cost: ¥2,000,000、Indirect Cost: ¥600,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
• Keywords: 利潤増加型参入 / 研究開発 / 産業組織論 / 参入 / 不完全競争

Outline of Final Research Achievements

I investigated some game theoretical models with vertical relations, which are often seen in real industries. And I also derived equilibria of the models and analyzed some models numerically.
I obtained a main result that profit-enhancing entry can occur in industries where group competition takes place, although strong assumptions are required so far.
I also investigated the strong assumptions can be weakened using numerical analysis. As a result, I obtained some clues for deriving more general results.