I see this, NEOM/Palm Islands, Eko Atlantic, Sidewalk Toronto and compare it to large urban projects from decades ago, like Brasília... is it even possible to d

I see this, NEOM/Palm Islands, Eko Atlantic, Sidewalk Toronto and compare it to large urban projects from decades ago, like Brasília... is it even possible to design a city from the grounds up? To just straight up select some plot of land and build infrastructure and create a community that otherwise needed hundreds of years of organic development with existing cities?