Rey, Patrick; Vergé, Thibaud - EconWPA - 2003
when downstream firms have "passive beliefs." We stress that in many situations, an equilibrium with passive beliefs may … not exist and passive beliefs appear less plausible than "wary beliefs", introduced by McAfee and Schwartz, that account … for multilateral deviations. We show that in a broad range of situations, equilibria with wary beliefs exist and reflect …