Drop the "intellectual" part of "intellectual property" and that's exactly what AirBNB is doing - tenants are literally using property that isn't theirs (they've leased it, but they don't own it)[0] and are making money off it.

And in doing so, they are also impacting others' property rights, since the externalities of short-term tenancy are borne by neighbors, not by the person who lists a whole-apartment rental on AirBNB.

[0] And given how hard the music industry has been pushing the line "you don't own the music you buy; you're only leasing rights to access it" for digital downloads (not just streaming), this isn't really that different a situation.

Fundamentally, if I own a property I should be able to allow/disallow access to anyone as I see fit, and charge appropriately. If I make money, I'm still obligated to pay taxes on it (therein, I imagine, lie the problems).

So I'd claim that AirBnB and Uber are helping push for more sane regulations which allow free-er markets, while Grooveshark was basically just short of directly-stealing the content of others to profit on themselves.

That said, I'd still rather have Grooveshark than not, because I personally don't care so much about the record-companies rights - but certainly the government should be there to help uphold the rights of individuals and businesses, which, alas, means legal trouble for Grooveshark.

Though, hustling senior citizens with bizarre Wii tennis mastery does make one think.