The success of human communities over the eons have been centred around many different physical and social needs, from water or food sources to protection from enemy attack.
Why not income size?
There are far too many existing examples of how badly such communities present themselves. Favellas, slums, hobo jungles — lots of different names. They may satisfy a vital human need for shelter, but generally, at least in the eyes of outsiders, they appear to fall far short of the basics of healthy community living.
But suppose smallness was actually planned, not grown like topsy? Is there a future for living large in communities planned for tiny-ness?
Read about one such project in the Springfield News-Leader: Elevate Branson creating tiny home community for those in poverty