Developers don't really build these and when they do, the prices are unbelievable so it's back to the suburbs for anyone looking to have kids.

You can’t really raise a kid in the city without private school. Large school districts are super inefficient and have to spend lots of money to bring up kids from broken families. High quality schools cheat that problem by excluding poor families through expensive real estate thereby increasing the number of resources per student. It’s not fair but that’s how the game is played