An interesting bit of evidence that resident concerns are a common motivation: in upscale buildings, which have the funds to pay for it, the crackdown on AirBnB is in even more full swing, through "free-market policing". Some condo associations actually have employees regularly scouring AirBnB ads in their area and looking at the photos to find rentals that look like units in their building (it's often not hard to spot, if you know a building well). Then the owner is identified and sent a "stop doing that" letter, and/or sued for violating their contract.