Also, the moment Jill White is busted for dealing something illegal, the authorities can immediately go after Bob Smith as a probable possessor of that illegal item.
It's like Tor. Sounds a great idea. But if the authorities set up enough Tor servers (which they undoubtably will have), then everyone wanting to do something illegal on the internet will voluntarily choose to come and do it through the law enforcement authorities own servers. And with a high enough proportion of servers owned by a single entity the algorithm can be broken and the users traced. Hence how crime rings are found on the "dark web". The fact that it sounds good draws people in.
It's like Tor. Sounds a great idea. But if the authorities set up enough Tor servers (which they undoubtably will have), then everyone wanting to do something illegal on the internet will voluntarily choose to come and do it through the law enforcement authorities own servers. And with a high enough proportion of servers owned by a single entity the algorithm can be broken and the users traced. Hence how crime rings are found on the "dark web". The fact that it sounds good draws people in.