Double marginalization, market foreclosure, and vertical integration

Choné, Philippe, Laurent Linnemer and Vergé, Thibaud

No 18239, CEPR Discussion Papers from C.E.P.R. Discussion Papers

Abstract: Double marginalization is a robust phenomenon in procurement under asymmetric information when sophisticated contracts can be implemented. In this context, vertical integration causes merger-specific elimination of double marginalization but biases the make-or-buy decision against independent suppliers. If the buyer has full bargaining power over prices and quantities, a vertical merger benefits final consumers even when it results in the exclusion of efficient suppliers. If on the contrary the buyer's bargaining power is reduced after she has committed to deal exclusively with a limited set of suppliers, exclusion of efficient suppliers may harm final consumers.

Keywords: Antitrust policy; Vertical merger (search for similar items in EconPapers)
JEL-codes: D4 D8 L4 (search for similar items in EconPapers)
Date: 2023-06
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Journal Article: Double Marginalization, Market Foreclosure, and Vertical Integration (2024)
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