A few days ago we tried to estimate how much Blizzard was making from those 10 million accounts, but now we know for sure: it's actually around $1.2 billion (which is up 58% from 2006). Now, you can probably see that that's only $500 million short of the estimate that we were trying to prove was wrong, but don't forget that the $1.2 billion isn't just subscription fees-- it includes all those sales of Burning Crusade last year at full release price. What Blizzard earns from subscription fees is just part of that total.
Still, a $1.5 billion year for Vivendi (especially when their other games divisions actually dropped by almost 30%) is good news for them. Of course, the question they (and more specifically, Activision Blizzard) have to be wondering about is if the success can continue. If Blizzard can release a new expansion this year and hold off the coming threats in the MMO industry, they'll be looking at even bigger numbers in 2008. But that's a lot to ask-- there's no question Vivendi (and Activision) will come up with huge amounts of profit this year, but growth of this magnitude will be a tough hill to climb.