It's called building codes. We don't allow balloon frame houses anymore, for example.

With commercial property rules can be applied differently. Airbnb just dumps responsibility on others.

Unfortunately that means if you're in a wheelchair, are a victim of a crime due to lax judgement/practice by the property owner, or die in a fire because there's no lit sign pointing to the stairs, you as a "guest" and the "host" are fucked.