Again, the economic driver has to be manufacturing or industry. This means people working. We have spent over a half century striving to eliminate productive employment and denigrating the working class. Understanding the importance of a productive working class is the root of a successful economic and societal model. A high rise office building full of advertising execs is not productive industry. The same building full of investment banker is not productive industry, though they can claim some relationship. Fill the same building with engineers, and you are getting close to having a saleable product.
I am no longer a productive member of society. Since I only provide services for tourists. I would be of little value in the 15 minute city.
It is one thing to be ignorant of our effect on the environment in general, it is quite another to be openly antagonistic toward it, just to gratify our wants. Planning cities in ways to counteract urban sprawl and waste is a good thing. Many of us would not want to live in the city, but if that's the case, maybe we shouldn't work there either. GD