東京大学政策評価研究教育センター

CREPEDP-89

Number CREPEDP-89
Publication Date December 2020
Title Compatible Mergers: Assets, Service Areas, and Market Power
Author Tetsuji Okazaki, Ken Onishi, and Naoki Wakamori
Abstract We empirically examine the discrepancy between the incentive of firms to merge and the social value of mergers using data on merger waves in the pre-WWII Japanese electricity industry when a competition authority did not yet exist. We find that firms could enjoy cost synergies when merging with firms with greater differences in production asset composition and/or reachable customers. Such "compatible" mergers resulted in increases in capital utilization and output. However, these synergies did not affect the merger decision; instead, geographical proximity increased the likelihood of mergers. These results imply that the merger incentive may not align with social welfare.
Keywords Mergers and Acquisitions, Merger Policy, Merger Waves.
Other information Paper in English (43 pages)