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Re:Airbnb And The Unstoppable Rise Of The Share Economy by fennecfoxen on Wednesday January 23, 2013 @05:40PM (#5105779)
The free market, remember, is only efficient under certain circumstances, particularly: transaction costs must be low and there must be few barriers to entry.

AirBnB et cetera lower the transaction costs and remove barriers to entry.

Re:Airbnb And The Unstoppable Rise Of The Share Economy by oillio on Wednesday January 23, 2013 @09:35PM (#5106790)
Easy discovery of price information is also important to capitalistic markets. Of course, AirBnB helps there as well.