The zero-sum game: that's the way it is if you're a competitive person and you see capitalism in that way. Zero-sum game implies winners and losers which I don't agree with. Somebody has to win and somebody has to lose, it all comes back to zero (minus eight, plus eight). But I don't agree with that because all boats can rise on a rising sea. Good films can help other films to be open. There's a different psychology at work. If you're overly competitive, you'll be exclusionary and say it's a zero-sum game (I must get eight and he must lose eight). Gekko simplifies it down to a painting. He says he bought this painting or this building for X and he sold it for Y and he made that profit and he assumes that somebody else got beat, but that's not necessarily true. You don't always lose.
Non-cooperative approaches, by contrast, almost always involve duplication of effort, since someone working independently must spend time and skills on problems that already have been encountered and overcome by someone else. A technical hitch, for example, is more likely to be solved quickly and imaginatively if scientists (including scientists from different countries) pool their talents rather than compete against one another.