[_delirium]

That's a strange bit of unsupported dogma. Forex traders can also: c) engage in massive amounts of feedback-loop speculation, causing market movements. Particularly likely if it becomes common for random retail investors to engage in "game-like" forex trading--- you'll get the same sort of situation as with the dot-com bubble, with retail investors signing up to E*Trade and pumping up the value of tech stocks. Sure, they'll likely lose money eventually, but not before distorting a bunch of markets.