This paper studies the impact of commodity taxes on the sustainability of collusion in imperfectly competitive markets. We consider both a Cournot and a Bertrand supergame with discounting, with collusion being supported by either grim trigger strategies or stick-and-carrot optimal punishments....

Which government functions should be decentralized (resp. centralized) once lobbying behavior is taken into account? We find that the answer largely depends on how the interests of the regional lobbies are positioned with respect to the function to be decentralized (resp. centralized). When...