This paper investigates the effectiveness of antitrust policy in fighting horizontal collusion under different regimes of policy implementation. We consider two regimes : a public agency regime, where an antitrust authority is in charge of competition policy, and a "delegation" regime, where the...

We analyze the air transportation vertical channel and show the existence of an asymmetric distribution of profit margins between airlines and the firms operating in upstream stages. Higher margins are observed for leasing companies, engine manufacturers and GDS, while airlines exhibit a very...

We investigate how the intensity of competition among airports affects their technical efficiency by computing airports’ markets on the basis of a potential demand approach. We find that the intensity of competition has a negative impact on airports’ efficiency in Italy during the...