You’re right policy changes are needed.

I’m a fan of mixed use neighborhoods, use conversion of existing buildings and building infill instead of cities consistently expanding outwards. I also think economically diverse neighborhoods benefit society as a whole. There are cities that have accomplished this better than others.

I cringe at bulldozed acres and planned communities with look alike houses and nary a mature tree in sight. It is possible to build communities without clear cutting and using the same 2-3 house plans.