Seems like game theory at work Cooperating may have net benefit but you'd get much further by being greedy while the others don't
The fact about reality is that there are lots of games, and if you choose a game which is zero-sum or even negative-sum, it's easy to say "This is just how the universe works." But nevertheless, that may only be true locally. If you go somewhere else, you may find that there is a game which is positive-sum.
It may not be a big game, it may not be the most popular or prevalent game, but what do you care? Each of us only needs to find one thing that works for us.
If you like zero-sum games, great, play them. But it's a choice, it's not forced upon us by the universe.