I'd argue that if we don't abstract away resource usage behind currency, we are pretty firmly in negative-sum territory and zero-sum is a pretty rose colored glasses way of looking at things that is currently obscuring us from pending horrors.

These people aren't satisfied with themselves having more, everyone else must have less too.

Not that I am interested in changing your mind on this. I would, though, encourage you to actually say it's "positive-sum" if that's what you believe instead of hinting and then being vague about it for some reason.