It is possible to change multiple laws if we want to. We made them up at a certain point, and we we can make them up differently at another.

You are applying a viewpoint which is not universally applicable, nor is it static where it does apply.

If you accept that housing is not market in which all parties have equal leverage to bargain, then you should also accept that regulating it to be more fair is not bad by definition.

We happened to regulate it in ways that were counterproductive previously, but the regulation itself is not guaranteed to always be counterproductive, unless you believe that discrepancies in leverage cannot be mitigated by regulation while the lack of leverage itself is being created partially by other regulation.

Easy solution is to apply same rent controls to all units. That is everything has limited rent rises.

And this is not unreasonable. If math originally works out, then it will continue to work out. System really should not rely on property price appreciation or arbitrary rent bumps.

> People with high incomes living alone in multi bedroom units objectively should leave.

Who cares how high their income is or how big the property is? If they pay the rent and want to continue living there, they should be able to continue living there. Taking someone's home away from them because "now you earn more money" or "now you're less people" sounds very inhumane, and I'm glad Spain wouldn't allow such discrimination.

I don't know why you bring up US laws, utterly irrelevant in this submission.