Evaluating Mergers and Divestitures: A Casino Case Study

F David Osinski and Jeremy A Sandford

The Journal of Law, Economics, and Organization, 2021, vol. 37, issue 2, 239-277

Abstract: Despite frequent use in practice, merger remedies receive little attention in the economics literature. We analyze the 2013 merger of two casino operators and the subsequent divestiture of one St. Louis casino. Using public data from the Missouri Gaming Commission, we employ a difference-in-difference framework with other Missouri casinos as the control group to estimate separate effects of the merger and divestiture on each St. Louis casino. Results indicate the merged firm benefited from efficiencies, resulting in lower prices and higher quantity; however, the divested casino performed worse than before the merger. Synthetic control estimates confirm these results. This study raises questions about whether to assess remedies by the performance of the divested asset or the consumer welfare of the entire merger. It also raises questions regarding remedy endogeneity: do firms face incentives to offer declining assets? Both have applicability beyond this case, supporting the need for further research. (JEL L1, L4)

Date: 2021
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