I think the pro-landlord commenters are missing the fundamental point:
In the “please pay me to live in my extra house” scenario, the problem is not that someone is renting your extra house. The problem is that you and others can afford to have multiple houses, so much so that the person renting your house cannot buy their first house. If the cost of houses increases as the availability of houses decreases, there is an obvious outcome to the richest people buying all the houses and renting them out.