The conventional view that product heterogeneity limits the scope for collusion among oligolpolists has been challenged in recent theoretical work. This paper provides an argument in support of the conventional view by emphasising the role of uncertainty. I introduce the idea that, with...

In 2026, the FIFA World Cup will for the first time gather 48 men's national teams. It will consist of a group stage made of 16 groups of three, with the best two teams in each group advancing to the knockout stage. Using groups of three raises several fairness issues, including risk of match...

Market features can be considered as forerunners of the European Commission's actions aimed at recognizing collusive behaviours. To identify information that might support the Commission in the exercise of its role of antitrust authority we propose a multi criteria approach. Its focus is on the...

Building on dynamic collusion theories, we predict that firms with less concentrated upstream or downstream industries have lower systematic risk because their supply chain partners tend to compete more aggressively during recessions, absorbing more of the adverse effect of aggregate shocks....