We examine the consequences of allowing a bottleneck input supplier to vertically integrate downstream and compete with users of the input when the input has a regulated price above cost. If the supplier maximizes the sum of short-run profits from the downstream market and input market, then...

I explain why a monopolist would knowingly create excess demand. Suppose customers initially do not know their valuation for a good but over time become informed. Although customers prefer purchasing after becoming informed, a monopolist prefers selling to customers while uninformed, because a...

By initially selling goods only in bundles and subsequently selling unsold units individually, a multiproduct seller can create a buying frenzy in which his profit is higher than it would be if he sold all units individually at their market clearing prices. In this frenzy, high-valuation...