You agreed that poker games are zero-sum. Poker games help the economy (create a demand for poker chips to be produced).Quote from Perseus:
winter, the futures market is part of the economy, it is not seperate. However even if i take what you say, that it 'helps the economy', that still supports my case. Even if it only helps the economy that makes it not zero-sum for a true zero-sum game would not help the economy.
You cannot change the definition of zero-sum to support your position, the definition of zero-sum does not preclude it from having beneficial external results. Using your definition, nothing is zero-sum.