-snipped from Joystiq-
"Though the majority of our subscriber decline occurred mainly in the east, where we have more subscribers and lower revenue per subscriber," Activision-Blizzard CEO Bobby Kotick said in a financials call, "We saw declines in the west as well."
"While we do believe further declines are likely and we expect to have fewer subscribers at year-end than we do today, World of Warcraft remains one of the most successful franchises in the history of entertainment," he added.
-snip-
I think that pretty much sums it up. Activision Blizzard themselves know the game is old, and that subs are going to keep declining. Why anyone here would argue against that, I don't know.