The gist I get from all this is that you get a small community of interests together, each with a stake in the proposed enterprise, and it's self-financing (ie: participation in the enterprise earns the investor, developer, renter, etc an equity position). The profits from the enterprise are withdrawn in marketable commodities (which is how the community interfaces with the greater world) which are generated (or purchased?) by the enterprise. Modern barter?

"It Can't Be Just About Us"
--Frank Schnittger, ETian Extraordinaire