Yes, seeing the world as a zero sum game leads to detrimental behaviour. There are of course lots of zero-sum situations. Equally there are lots of mutually be

Yes, seeing the world as a zero sum game leads to detrimental behaviour. There are of course lots of zero-sum situations. Equally there are lots of mutually beneficial opportunities. Ironically those who can't see those opportunities ultimately end up losing, which reinforces the zero-sum world-view.