Ok, but so to start with one necessary good - how is housing to be allocated? Who gets to live in the house that is overall most desired, and who gets to live in the one that is overall least desired in a given community?
I think the answer is to convince and then trust whomever owns it to allocate the excess equitably
The only way we get to whatever the next thing is can only be done through voluntary demonstration of good will and non-violence, by individuals or the state. It's going to take a lot of people taking risks and being vulnerable that normally wouldn't be.