I wouldn't count that as a success. A success would be if it was the standard today to distribute large media instead of large CDNs and server farms.
Discussion
I mean, game downloads use it. Like steam and world of Warcraft.
Definitely the prefered way of distributing Linux ISOs.
But the effect it had on media isn't even done yet.
I can't find on DVD or blue ray some shows I want to watch. Because they skip those formats. I think BitTorrent had something to do with that.
Is that a success? Idk, but it certainly changed the world