Owners actually have fewer rights than average, in the sense that it is residents who vote, and many owners can't even vote in SF. Also, you still only have one vote even if you own 100 units. Yes, owners lobby, but in my opinion residents in general resist change because it will often erase elements they want to see preserved due to the city's historical character. There is no right or wrong in that debate since it is a personal taste/priorities issue. And further crowding affects everyone. Very few will vote for it, as time has shown.

Basically its going to require an earthquake before land becomes available

You should ask the red states and red cities. Generally speaking, they don't have these egregious nimbys. Houston even with 2 MIL population, and fast growing, still keeps housing prices low, even after a hurricane!!!