This paper studies how wealth and health inequalities have interacted with the Covid-19 epidemic in a way that has reinforced inequalities in income, savings, epidemic risk and even individual preventive behaviors. We present in more detail two papers and their theoretical and empirical results....

A national-champions-related industrial policy has become (again) en vogue among European politicians. Against this background, our work orders different types of national champions along the industry lifecycle. Different types of locally bound externalities appear along the lifecycle. In a...

We study the welfare impact of enforcing a competitive behavior from an unregulated fringe competing with a regulated dominant operator with imperfectly differentiated goods. The fringe is potentially collusive but may be supervised by a competition authority. We show that the...

A national-champions-related industrial policy has become (again) en vogue among European politicians. Against this background, our work orders different types of national champions along the industry lifecycle. Different types of locally bound externalities appear along the lifecycle. In a...

Entrants may provide information to a regulator, even when they cannot be regulated. With correlated costs, yardstick-like regulatory contracts based on the output of unregulated firms nullify information rents. But they give strong incentives to the regulated incumbent to bribe competitors. A...

When an incumbent firm is in charge of a distribution network, it accumulates information on the state of the network. This `common value' information creates a winner's curse during auctions for renewing the concession. The municipality contracting out the provision of the service trades off...

We investigate the interactions between managers’ incentives to collude or compete, and incentives to exert effort. A manager privately chooses the competitive strategy of the firm, and his own effort to improve productivity; He may substitute collusion to effort to increase profits. High...