On the endogeneity of Cournot, Bertrand, and Stackelberg competition in oligopolies

► I analyze a model of oligopoly that distinguishes planning and production phase. ► In the planning phase, firms may pre-order input factors and forward sell output. ► The equilibrium set includes the Cournot, Stackelberg, and Allaz-Vila outcomes. ► If time horizon approaches infinity, it also includes the Bertrand outcome.