I am still amazed that offering your room / flat for commercial rent is not covered already by hotelier law. It seems such a simple concept to put into the law

I am still amazed that offering your room / flat for commercial rent is not covered already by hotelier law. It seems such a simple concept to put into the laws that it's amazing it's not already there. I mean every B&B has fire doors, extinguishers, and usually big signs saying "please respect our neighbors and STFU" When this happens to airbnb, what proportion of people will stop renting their homes ?