Bleh accidentally upvoted you instead of downvoted, but this is blatantly false. If money were a zero sum game, then how do we have growth and inflation? The money supply grows, ideally at the same pace the economy grows. Businesses create wealth, and as transactions that transfer wealth grow in number, we need more money to facilitate those transfers of wealth.

The money itself is only as good as the wealth it can purchase, and as that wealth steadily grows, we need more money to carry out the transactions. So it is by no means a zero sum game.