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This paper examines the informativeness of consumer information networks and their effect on price competition between .rms. Under the proposed information mechanism, consumers share their initial information with the members of their network and as such become better informed. The main result...
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A common supplier (the hub) could try to enforce a collusive outcome between his buyers (the spokes) if they are unable to sustain such an agreement among themselves. We derive necessary and sufficient conditions under which the hub is willing to assume the policing role in a cartel.
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