Another way to look at your 'profit' is just as an increase in the operating costs of all the other players and the house. I think the zero-sum part implies th

Another way to look at your 'profit' is just as an increase in the operating costs of all the other players and the house. I think the zero-sum part implies that this type of trading is not actually productive. At this point, it is literally just modifying numbers represented as fluctuations in local electro-magnetic fields instead of something useful like carrying spices from one continent to another.