> The owning class, already fight against the building of additional supply.
I mean of course, but both are true, it limits supply in just the straightforward way that it means more people can compete in high desirability areas. (maybe it increases demand, not limits supply?) either way it drives prices up.
The owning class (Both single home owners that live in the house they own AND people who rent out units) already fight against the building of additional supply.