How do you think NYC became NYC?
You can create a new city in the middle of nowhere but you'll be missing any authenticity or history. You won't find a bar "since 1889". Some care more about that than others.
Of course that's less of a factor in the US anyway as everything is much more recent.
Planned cities can work but I still tend to find them quite weird. Luke Canberra in Australia. Or Lelystad and Almere in the Netherlands (their whole province is reclaimed land).
Zoning laws are a more recent invention, and zoning laws combined with financial leverage and green belts/density limits for maximum real estate price pain only cropped up as an innovation in the 20th century.