The biggest difficulty here is enforcement. You can create laws based around how frequently a residence is rented or whether it's the full residence rented or m

The biggest difficulty here is enforcement. You can create laws based around how frequently a residence is rented or whether it's the full residence rented or merely part of the residence but then you need to actually enforce those laws. Is enforcement based around income taxes from the renter? Or reporting from Airbnb itself of what's available on the site? Do local governments have to setup a small team or even an entire agency to watch this stuff? Cities need to budget for this enforcement. This stuff is hard. Even if every popular tourist city immediately passed legislation to limit Airbnb practices it could be years or decades before they figure out the details of making that policy into reality.