WebTorrent seems like the most obvious solution for distributing Linux ISOs. Instead of coordinating networks of volunteer http mirrors, the download webpage of various distributions could simply use WebTorrent and operate one webseed... Then every user becomes a seeder. They are usually going through the trouble of making torrent files anyway.

I made a proof-of-concept of this idea during the pandemic for fun[1]. It doesn't work very well without WebRTC peers though.

1. https://linux.exchange/