Price controls, like rent control, have the well know effect of reducing supply. Along with extremely restrictive building policies, SF housing supply has become inflexible and is unable to keep up with demand thus prices will go up. This is exacerbated by the various low income housing policies which also reduce the supply of market priced housing that the middle class occupies.

This was entirely predictable. There is no free lunch. You can't have cheap housing for some without raising the price for everyone else. SF is just a particularly extreme example.

BTW - Don't worry about rent control going away anytime soon - we are locked in politically. And planning restrictions are unlikely to ease either. So expect continued above inflation price/rent increases and a slow exodus of the middle class. Due to the poor schools we have already lost many families.