Now let's get back to that unfounded assumption of yours that you know how it is while in fact most of the things you think you know here is just your wishful thinking. Who exactly is scared shitless? You assume someone has to be, but nobody has any reason to. The process of selling and buying changed a bit, that's all. Most of the change was NOT because Blizzard banned too many, nah, they didn't, it was because there are buyers who would pay for extra super-100%-bulletproof guarantee and the process where they only come in at the very end to get the reward and are not implicated in any way before that happens. That's all there is to it.
Now, like it regularly happens with know-nothings who make a hundred of bizarre conjectures for the wrong reasons, you, too, manage to say something that ends up being true in one of them. The profits *are* down. But why? I will let you guess. Come on, make a guess.
It's because the game is doing worse and worse and there are just less potential buyers on one hand and less spots to sell on the other hand.