The paper formalizes the observation that submarkets for high-quality and low-quality variants are markedly different from each other. We study a simple model where variants of low quality cannot be horizontally differentiated, whereas customers disagree about the value of variants in the...

This paper formalizes the observation that submarkets for high-quality and low-quality variants are markedly different from each other. The authors study a simple model where variants of low quality cannot be horizontally differentiated, whereas customers disagree about the value of variants in...