The only issue with the crack down on illegal rentals is a lot of units are now sitting empty. I talked to a few people I know and they told me they'll just let their units sit empty and let family and friends stay in it. Which is probably a way of saying they will still rent it out occasionally but they just won't advertise it on Airbnb.com. These people, who are all wealthy, told me explicitly that they don't want to deal with long term renters.