I was thinking more about legal actions. But then again torrents need trackers and search sites. It seems like it’s hard to shut down pirate bay though. I just have a feeling that usenet flies under the radar a bit, but if it became mainstream, it might be easier to shut down a server than a shifting swarm of peers?

Doesn’t this also mean that the server can be a single point of failure? Whereas in a torrent swarm it’s distributed and more resilient?