In my opinion, NAT and the extensive tracking that has led users to distrust sharing their IP addresses are the reasons why it hasn't caught on.
Imagine YouTube using P2P technology, it would save lot of money spent on caching servers.
> Imagine YouTube using P2P technology, it would save lot of money spent on caching servers.
I think its money well spent.
There is a lag between the source and the audience, maybe it's been improved in the last 4 years though, not sure.
I couldn't find much docs on how it works, just https://docs.joinpeertube.org/contribute/architecture#live
Sounds like they break the stream into very small segments and publish each of those with bit torrent (?), they seem to claim about 30 second delay and scale in the hundreds but not thousands. Certainly impressive if true, i wouldnt of thought such an approach would scale so well. Of course its still a far cry from twitch, but nonetheless impressive.