zeffyr: Personally I haven't voted for Blizzard games, as there are and will be literally 0 chances for them to appear here - they are being sold by Blizzard directly. So that's the reason.
RottenRotz: fair enough,but i personaly think they will eventualy appear on GOG.maybe in a year,maybe in 5 but they will.i know its very optimistic but still
They won't - the multiplayer mode is based on battle.net infrastructure so there is no possibility to convert the game into DRM-free version without rebuilding (or building again) major part of the game, which will, as I said before, not happen.
It's OK though, the games are still available and the support for them is enormous - buy them directly from Blizz, they're worth it :-)