No, AirBnB isn't a solution to this problem. The problem is there's a constrained supply of housing in Paris and the city wants to try to ensure that people who own housing there actually live there. You know, so there's an actual thriving community and culture instead of fly-by owners that aren't actually residents.

How in the world does a service that encourages turning residential housing into hotel rooms solve that problem exactly? Local wanna be residents are going to rent rooms in the homes of the wealthy absentee homeowners? Maybe some, but I suspect a vast majority are fine just letting them sit vacant. Even if they do, that's no way to build a healthy, thriving community. It's fast food housing. I, as well as many others, don't want to live in a building that's part residential, part hotel.

So your solution is "Let AirBnB enable the absentee owner to rent out their place to the local baker that is priced out of owning.", thereby giving the illusion of a solution but really not solving the problem because the fabric of the community becomes provisional at best.

Seems like a fairly poor solution to me. I hate red tape as much as anyone but I've come around to think that well crafted and executed policy that focuses on the common good is a better option to strive for than figuring out how to enable even more wealth concentration than we already have. The trick is "well crafted and executed" which I agree is rarely the case but we already know the end game with unbridled capitalism. Just ask the pope - https://www.theguardian.com/world/2015/jul/10/poor-must-chan...