Airbnb is emblematic of the new "disrupt everything and fuck the consequences" economy. Too bad more landlords don't lay a smackdown on tenants who use their apartment as a hotel.
I could see landlords being lax because they might not be present or live in the building and have no sense of what is going on. In my building in NYC, renting your condo via Airbnb, VRBO, whatever is a $1,000/day fine.
People always talk about how AirBnb is ignoring consequences. But other than a very few high-profile cases, I haven't seen much evidence of these supposed consequences.