Torrents still account for a massive share of internet traffic. Furthermore, I think it's reductive to just consider it a tool for piracy. Blizzard uses (used?) BitTorrent in their game launcher to alleviate server costs. Not to mention that a lot of bittorrent traffic lives in the fuzzy area of sharing lost media and abandonware. Gabe Newell famously referred to piracy as a service problem, and the success of services like Spotify, Steam and Netflix undoubtedly prove that to some extent. Like yes, the easiest way to dive into the Disney back catalog is through Disney+, but there's also Disney content which, for various reasons, you can't access through the service but still has historical value.