Black markets are developing a sort of cell system by which the participants can't identify each other and can't betray each other. The customers never see any of them, and they can't identify the customers either.

As sale of prohibited goods becomes anonymous and safe, lawful sales of lawful goods are becoming a dangerous system of massive surveillance. When will we be able to buy those through a darknet, for our privacy?

If Tor sold its DRM-free contract-free e-books through a darknet, I would in principle (some details are crucial) be glad to buy them straight from the publisher that way.