The existence of rent control is a disincentive to build even non-rent controlled buildings, because when you make a building you have to have a good guess of w

The existence of rent control is a disincentive to build even non-rent controlled buildings, because when you make a building you have to have a good guess of what is going to happen over the next 20+ years. If your last 20+ years include "The evil landowning classes are soaking us! We should expropriate their unfair profits and redistribute them to hard-working social workers and artists! Except for the luxury apartments, those are totes cool." your expectation as a builder of luxury apartments will probably not be "I'll certainly have unimpeded ability to exploit this apartment in year 15 of its 30 year expected life."