It should be economically efficient for people to live in big cities. Smaller living spaces are more economical than larger ones. Public transportation can be

It should be economically efficient for people to live in big cities. Smaller living spaces are more economical than larger ones. Public transportation can be used instead of building larger roadways. The cost to live there may be more expensive, but the taxes go further, and taxes should be lower. Lower taxes and higher density means more companies will come into the city to hire, etc. That's not true right now for a number of reasons, but that's why large cities exist. If rent is too high, it just means that there's not enough supply. And the city should fix that.