User Freedom through Source Ownership
Property Left through Property Rights
The GNU GPL insures each user is given "at cost" access to the virtual Sources of the products they use.
Could we insure each user gains ownership in the physical Sources of the products they use?
We could write a sort of //GPL for the material world// by crafting a "Terms of Operation" designed to protect User Freedom.
We could then buy land in groups, held under those terms, to collectively own the Means of Production because we need the results of that production.
We could also schedule work early (sign Work Contracts) to solve the barter problem and thereby insure any good or service with full specialization of labor without token passing.