Why do you keep saying mmo's in the general sense lol? This is WoW, this isnt some run of the mill mmo. And no no one has any idea about why took off, it was just a perfect storm and the details of that storm are still hidden to the industry as none have come close to replicating its success.
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@Gadzooks, i was responding to this line:
Of course they are going to say something like that, like i said this is blizzcon worthy news.They stated pretty plainly that it's too much work, and too costly.