Nothing like DarkNet - this idea is a completely new and independent infrastructure, and thus would be a completely new internet (no connection into the existing internet). Not just some anonymous proxy service for buying drugs and looking at illegal porn. The idea here is much more than just decentralization and freedom from regulation - it's about speed and remote processing. Like the parallel and concurrent processing in a multi-core processor or GPU - apply the same idea to a network. Like Torrents only an infrastructure designed for that type of processing.