Many (if not most) of AirBnB's major markets explicitly forbid short term rentals without a hotel or bed & breakfast permit and associated taxes, yet AirBnB lis

Many (if not most) of AirBnB's major markets explicitly forbid short term rentals without a hotel or bed & breakfast permit and associated taxes, yet AirBnB lists and drives business to them seemingly indiscriminately without so much as asking for such paperwork. What's the complexity? Airports and felony charges instead of evictions and injunctions?