What a joke. When that company goes bankrupt is when I'll start worrying about recession.
They have more than enough support both financially and legally to easily take down every privately hosted WoW server there is. This DMCA letter didn't attack one server at a time, from reading the other thread with more info it looks like there was a whole list of major emu servers involved.
And as to the posts about how much they make monthly/yearly. That's just off the payments to play... Sure they have a lot of bills to pay, but you're not counting how much they make off Keys and all their extra goodies like that Frostmourne sword and other merchandise. Not to mention Blizzard has other games.... they still make money off Diablo and Starcraft and even Warcraft. I think you're underestimating how powerful of a company they are.