Overall really good post, but I'm curious about the "Politics emerge when the players believe the game is zero sum". What are the arguments that it's not a zer

Overall really good post, but I'm curious about the "Politics emerge when the players believe the game is zero sum". What are the arguments that it's not a zero sum game? In theory, sure it's not. Everybody works to increase revenue and profits, ergo everybody benefits, but in reality?