C. Milliou and J. Sandonís
Journal of Industry, Competition and Trade – Forthcoming

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Abstract: We study the incentives of final product manufacturers to introduce new products into the market and the impact of a manufacturer merger on them. We show that when manufacturers distribute their products through multi-product retailers, a manufacturer merger, although it leads to an increase in the wholesale prices, it can enhance product variety. The merger induced product variety enhancement though arises only when vertical relations are present: when manufacturers sell directly their products to consumers, a merger never results in more product variety. Still, both with or without vertical relations, a manufacturer merger hurts consumers and decreases welfare.