@hllizi concrete example: he did not know that Freenet (now Hyphanet) already supported video on demand two years ago. That people were actively watching music videos on that fully decentralized, privacy preserving system.
Not in perfect quality, but good enough that most music videos were enjoyable. Conference talks and similar were no problem at all.
(currently that’s broken, because Mozilla removed Theora from Firefox and we need to validate data so the browser doesn’t leak private info)