I see a problem that is just as big, or probably bigger, here for the (PC) game industry: the near-monopoly of Steam.
I try to buy non-Steam versions of the games I buy, because I dislike Steam's online DRM and their client, but it seems that Steam is the new Windows when it comes to gaming. "Everything" is released on Steam first, and it seems a lot of times only on Steam. Which means that we're one focus shift or stolen password away from not being able to run the games we've bought and paid for.
gog.com has a better offer, IMHO, by being DRM free. Are there any other similar competing services? Humble Bundle seem to be selling Steam keys these days, so they're a subset of Steam.