They could, but they won't. They'd much rather sell you the games again, in sort-of HD (running at a higher resolution with somewhat better textures) for big mark-up. And before broodwars comes in and defends them and turns it against Nintendo, I'm not criticizing as much as calling them on it, and I'm totally aware that Nintendo will almost certainly do the same thing on the Wii U, although that'll at least play Wii games.