What about some open source resource management system which allocates base needs of humanistic psychology pyramid? so food, housing, water & nothing more. Then rest of society functions via anarcho capitalism for example. This would mean we would be trusting successful people to not mess with the base infrastructure of the resource management system. This only works if its more profitable to keep the base resource management system vs manipulating it. edit: (not manipulating it, destroying it, manipulation could not be a major problem)
I'm all for basic provisioning. I'm also all for a cap on capital, in the sense that there should be a limit to what a single entity can move in society.
I'm not so sure about anarcho-capitalism. Without any form of regulations it would become trivial to abuse power. You would need a regulated 'theatre' to have anything like a 'free' market or else it will become abused.