If one person owns all the land, they (or someone they authorize) can boot anyone unwelcome. This makes life much simpler because you can sidestep a lot of issues and focus on what this really is: a pilot project.
The full EPCOT plans are interesting. A circular city layout, with layers. Density in the center. People taking monorails to work, and WEDway people movers locally. Designed for biking and walking. Cars only used on weekends.
Irvine company owns all of the land of city of Irvine. Or something like it.