This is sort of true, but in practice (in the bay area) new construction only happens at the whims of neighbors. Since rent controlled tenants are totally insul

This is sort of true, but in practice (in the bay area) new construction only happens at the whims of neighbors. Since rent controlled tenants are totally insulated from supply and demand, it's common for tenants to only evaluate their annoyance with new construction, and not the beneficial effects on the rental market. Renters can only be NIMBYs even they're locked in by rent control.