I would point out that no serious or semi-serious players, in Korea or anywhere else, actually use Battle.net for Internet play. They generally use iCCup, a hacked-together custom implementation of Battle.net with its own ladder, anti-hack, and out-of-game integration. Blizzard is not happy about this and is apparently going to work as hard as possible to try to keep total control this time.

Of course, but the point is that Blizzard is still interested in maintaining the game for the foreseeable future, whether or not battle.net is the chosen medium through which serious players compete.