This is the reality in most rent-controlled areas, I supppose. Germany for example has very strict property rental laws. Unlimited contracts only save for rare

This is the reality in most rent-controlled areas, I supppose. Germany for example has very strict property rental laws. Unlimited contracts only save for rare exceptions, cannot evict a tenant unless you want to move in yourself (and even then cities such as Berlin defer this right by the legal maximum of 10 years for properties that change owners), can't raise rent while the contract is in force unless it's been written into the contract from the beginning. And a place that's rented out to someone new has a capped maximum rent increase in comparison to the previous tenant. Renting out property in Berlin is gambling. You have to bet on who is at the same time the most financially stable and the most likely to stay in your place medium-term, so that you can re-rent the place reasonably often to game the system the most. Yuppie families or single professionals have a winning hand here.