2. Not sure what calculus you used to determine that they live at the locals’ expense. Surely people paid for their properties and local products including paying VAT.
2. Oh they pay a little in tax. Not the same as depriving locals of places to live near where they work affordably, and pricing all but the highest earners out of a home in general. Not to mention it pushes locals further and further out of the areas near jobs, and even then it's more and more expensive. Longer commutes, higher rates, it's all a net negative on the actual residents of a city. Nobody benefits but the entitled tourists and the rich landlords, who are insulated enough by their money to not see or care about the societal harm they cause.
2. Oh, so there are also “the rich landlords”, who stand in opposition to “locals”. Who else do we have? Politicians and construction companies. All of them seem to partake in that grand conspiracy of lack of xenophobia to serve entitled foreigners through legal means. If only they could learn about Blut und Boden calculus of not harming locals…