A supramonopoly is the market structure of a homogeneous good that is priced higher than the monopoly level. We present evidence of supramonopoly in the US air passenger service. For four airline mergers during the period of 1993 to 2009, we identify routes that dropped fares for no other reason...

In markets where consumption is socialized, persuasive advertizing can change consumption by affecting socialization, rather than taste or price. The paper develops an explanation of persuasive advertizing in such markets and notes its particularly simple welfare implications. The paper then...