It is hard to quantify the value of noise, trash etc. which is one of the many reasons we have zoning over just people suing each other. On the risk side, you

It is hard to quantify the value of noise, trash etc. which is one of the many reasons we have zoning over just people suing each other. On the risk side, you are exposing people to the potential threat of physical harm which money cannot replace. Risks like rape, murder etc. while low are definitely increased when you open apartment buildings to random people. I'm an AirBnB user, but their business model isn't as neatly disruptive as Uber's IMO.