Everything you say here is obvious; you are making the obvious case that the big bad hotel industry is conspiring to shut down Airbnb. Anyone on HN would, if asked to advocate the position that hotels were conspiring against Airbnb, make exactly the same case.

I'm saying: I doubt that's what's happening. I've heard too many anecdotal stories about complaints, and am too capable of looking at (a) revenue numbers for hotels and (b) stats on how people book hotel rooms to think that anyone at Marriott is really being kept up at night about this.

At some point, Airbnb will be too big and disruptive for the major chains to ignore. But now? I doubt it. I think cities are reacting to complaints.