Reducing fixed cost duplication - a common justification for concentrated market structure - motivated the US government to relax the number of radio stations a firm could operate in any local market.  After deregulation the number of firms per market decreased.  The implied cost saving...

Reducing fixed cost duplication - a common justification for concentrated market structure - motivated the US government to relax the number of radio stations a firm could operate in any local market. After deregulation the number of firms per market decreased. The implied cost saving depends on...