Thats pointing out the obvious. The Steam service takes a "cut" from every sale. But they host the product, put measures in place to control piracy (though I swear most of the torrents I see come from Steam), market the game, and much more. Steam is actually a pretty awesome service for companies to use. An article that was on Wired.com basically said that Steam cost more to sell on than a brick and mortar company, but the cost was actually lower over all because of so many other services that Steam cuts out of the loop.
Steam markets across the board, actually. They dont advertise themselves directly, but try to draw in customers for a particular game on their service. They advertise on Amazon and Google, for example. Last I read, Steam has around 70 million users that log into the service at least once a month. Forbes had more information in last months issue. I wasnt disputing that companies still need to market their game, just informing you that the Steam service has more than what you state it has and does more than you think, as well.
They're great for small guys, absolutely. For the big guys though, they will do everything they possibly can to get out from having to pay for Steam since they have enough power to do so.
Industrial supplies materials for commercial and also allows you to sell materials globally.
