[diggan]

> Sure, but does it not occur to them that property owners might be performing an important function such that a policy that causes most of them to leave landlording might worsen the situation of the homeless and other poor people?

Sure, but I think most people feel stronger about helping people at the bottom of society, rather than the ones closer to the top.

Worst case scenario for the homeless, they remain homeless and have lesser life expectancy. Worst case scenario for the landlord with vacant properties losing their vacant properties, less wealth in the future.

> Suppose the government instituted a rule that applies to any game developer and in particular to the [...]

Yes, that'd be a terrible policy. Same if it applied to property. So luckily, there is nothing like that in Spain that works like you described it, regarding properties.