When this drop off starts to get even more seriours, we will see a tightening of the Activision grip on Blizzard. Suddenly the pressure will come on like a motherfucker and our beloved studio will drown in a pool of capitalist bullshit. They have become addicted to this seemingly unlimited river of money pouring in month, after month.
Two things will happen. DiabloIII will feature some kind of subscription model when it does come out. Goodbye dynamic multiplayer Hack 'n Slash, hello WoW clone. And Blizzard will push the release of Titan.