A dynamic theory of regulatory capture

Firms have incentives to influence regulators' decisions. In a dynamic setting, we show that a firm may prefer to capture regulators through the promise of a lucrative future job opportunity (i.e., the revolving-door channel) than through a hidden payment (i.e., a bribe). This is because the revolving door publicly signals the firm's eagerness and commitment to reward friendly regulators, which facilitates collusive equilibria. Moreover, the revolvingdoor channel need not require an explicit agreement between the firm and the regulator, but may work implicitly giving rise to an industry norm. This renders ineffective standard anti-corruption practices, such as whistle-blowing protection policies. We highlight that closing the revolving door may give rise to other inefficiencies. Moreover, we show that cooling-off periods may make all players worse off if timed wrongly. Opening the revolving door conditional on the regulator's report may increase social welfare.