I think that BitTorrent eventually became a token on Tron and they integrated it into a client. Never checked it out to see if it worked out though.

it's a good idea because file sharing needs incentives, like how miners get rewarded.

Honestly, I would recommend trying to find a way to do it "on top of" torrents. Maybe people set a sats/kb fee for uploading from them.

Maybe try to do it noncustodially, because then you would be harder to shut down. Maybe put a Spv node like phoenix or breeze in a BitTorrent-type client.

Normally self-custodying streamed sats isnt done because the node has to be on if it's receiving. But if you are uploading files, that the program is already running.

Anyway, just some thoughts. Alternatively, you could try a legal website that hosts public domain and free open source files, media and software, and just gets lightning payments to pay for hosting costs.

Also, read up on Keet and Holepunch. It's doing a whole new way of p2p filesharing. I think it's being worked on by the Tether guys.