Rent’s too high! More rent control!
Stop building stuff that obstructs my view, I don’t care if its a new apartment complex!
I read somewhere that rent control also means if any new housing stock is made, it is built for the wealthy to whom rent control is meaningless, like millions-of-dollars worth per unit.
So you get no new units under rent control, restricting supply, and new units are created to guarantee a profit by catering to the wealthy, limiting or reducing supply for those who make less.