I think its largely due to selfish residents in these cities. Other than a few property developers who would benefit from building lots of condos most of the re

I think its largely due to selfish residents in these cities. Other than a few property developers who would benefit from building lots of condos most of the residents benefit from keeping development at bay. They enjoy increased housing values, fewer new homes built keeps the "character" of the city the same and less new people who can afford to live in the area maybe results in less traffic (probably not as people just commute long distances and its worse but residents are often delusional).