This feels very much like someone walking into a room with a complicated, but currently broken, machine, noticing that one cord isn't plugged in, and loudly announcing that you solved the problem before you even tried that cord.

Oh duh, why didn't we think of that slaps forehead. If we all deny reality and pretend that life is an infinite-sum game then we can have most of the benefits of a true infinite-sum game.

This simply doesn't stand up to game theory, because the spoils of defection are large and you can't stop people from doing it.