Note that I'm not saying rent control is bad. Anyway, imgabe argued that having more and more apts owned by rich folks that don't live in them changes the city

Note that I'm not saying rent control is bad. Anyway, imgabe argued that having more and more apts owned by rich folks that don't live in them changes the city for the worse, reducing the value of these apts as well. I'm arguing that having rent control means there is a base of people who live there and keep the city/neighbourhood thriving, thus (as a side effect) helping the expensive apts keep their value.