[escalt]

It is said that the infrastructure required to sustain suburbs costs more money than these suburbs bring in. In the US a city gets federal money to build new suburbs, but when it comes to renewing them after a few decades, the city has to pay on its own and it often has not enough money to do it.

I am by no means an expert on this topic and just poorly summarized the contents of this video: https://youtube.com/watch?v=7IsMeKl-Sv0

[parker_mountain]

It's also affecting some cities, such as Chicago. Wacker Drive is an example of this.

It turns out that core infrastructure should be built to be inexpensive to maintain, and density helps greatly with that goal.