half true and half false. blizzard entertainment splits the money with activision, and activision splits it with Microsoft. (I think)
wat
Activision Blizzard has nothing to do with Microsoft in regards to WoW.
It's more like people throw money at Activision, then Activision cancels 100 potentially great projects, tells Blizzard to not make any good games and at the end might give Blizzard a little bit of the profits.
That's how modern industry works.