If you live in rent controlled housing in SF, your rent increases are gonna be a lot less than 10% a year. And you're unlikely to ever be evicted due to a house sale.
During our last apartment search, it was not particularly difficult to find a rent controlled apartment.
Rent controlled housing (depending on how implemented) can effectively create “land gentry” who have access to a valuable asset at below market prices that they can’t sell.
Nevertheless, I think it's unconscionable to let landlords arbitrarily increase rent and evict people at will. Rent control and increasing the housing supply should be orthogonal issues, more or less.
During our last apartment search, it was not particularly difficult to find a rent controlled apartment.
I wish other cities would do the same thing.