I just hope we can come to a point where perhaps there is a way to allow airbnb to exist, while making it illegal to rent out property purely to rent it. This could allow it to be more like the bed and breakfast logging that it tends to feel like. I'm thinking restrictions to aid this are artificial limits to how many people/how many days per year you can rent out rooms in your home, which airbnb would be required to record.
I still have no idea how things like sanitation will be handled. Right now an airbnb host has very little obligation be sanitary like a hotel, except that it might make their reviews worse.