2018/09/20 by Allan Collard-Wexler, Allan Collard‐Wexler, Gautam Gowrisankaran +1 · 2 citations
Economics, Econometrics and Finance · Social Sciences · #Global trade and economics #Merger and Competition Analysis #Labor Movements and Unions
paper · doi:10.1086/700729
A “Nash equilibrium in Nash bargains” has become a workhorse bargaining model in applied analyses of bilateral oligopoly. This paper proposes a noncooperative foundation for “Nash-in-Nash” bargaining that extends Rubinstein’s alternating offers model to multiple upstream and downstream firms. We provide conditions on firms’ marginal contributions under which there exists, for sufficiently short time between offers, an equilibrium with agreement among all firms at prices arbitrarily close to Nash-in-Nash prices, that is, each pair’s Nash bargaining solution given agreement by all other pairs. Conditioning on equilibria without delayed agreement, limiting prices are unique. Unconditionally, they are unique under stronger assumptions.