But how do you resolve a situation where there is actually only enough of a resource for one individual or group in a positive-sum manner? The historical record is clear that there are zero-sum situations, and in those situations there can be only one winner.

I don't believe you when you say we live in a world of abundant resources or that we can simply create new resources or that we can design a perpetual motion society of "lasting prosperity".

An argument between you and me over your thesis would not end in two winners. I think it's a silly, ideological, unscientific proposal that is unquantifiable in all its essentials.