I can't speak to this problem in tourist destinations or Europe generally as I don't have enough data to have an opinion, but I frequently see Airbnb blamed for high housing costs in some American cities and it strikes me as being a bunch of bullshit. Sure Airbnb doesn't help the rental problem and it is a contributor to rising rents, but the primary problem isn't Airbnb, it's lack of supply of high density apartment living options. Many US cities are composed primarily of 2-3 story houses which have been converted into dingy expensive apartments. This is utterly unacceptable from an efficiency standpoint. Many of these units need to be bulldozed and replaced with high rise apartments if cities are to become affordable again.