[wongarsu]

BitTorrent is "just" exchanging files via a p2p connection. It's kind of useful, a lot of projects use it in one way or another, but it's unlikely to be instrumental for "the next big thing".

The BitTorrent DHT is great for storing and exchanging metadata, but a DHT is not something most people associate with BitTorrent (Bitcoin also has uses a DHT (for client discovery), as do countless other services).

Blockchain technology on the other hand offers verifiable distributed timestamping (with ok-ish resolution). That has much wider applicability than just payment tracking (which is essentially all bitcoin does), which is why there's plenty of people exploring what's possible.