We analyse the impact of an entry threat at the downstream level on the ability of a pair of vertically integrated … the structures of this market for which an entry threat facilitates collusion between incumbents. While the entry threat … leaves collusion and deviation profits unchanged, it lowers profits in punishment periods. Consequently, an entry threat …

In this paper we present an experiment in which we test the effects of sequential entry on the stability of collusion … makes collusion harder to sustain. In this study, we explore to what extent collusion can be upheld with exogenous entry … prior to entry. We find that collusion is indeed easier to sustain in the latter case than in groups starting large. We …

, including the relationship between the Herfindahl index and social welfare, free versus socially optimal entry, concentration …

, including the relationship between the Herfindahl index and social welfare, free versus socially optimal entry, concentration …

for entry and may also make consumers better off compared to the situation with no labour union if the labour productivity …

, including the relationship between the Herfindahl index and social welfare, free versus socially optimal entry, concentration …

Miscoordination of buyers might prevent entry in an industry with an incumbent and a more efficient potential entrant …. Buyers' power therefore favours entry by eliminating coordination problems. We also identify a mechanism which facilitates … entry: if the potential entrant could credibly offer to pay a penalty for unfulfilled orders, miscoordination would be …