Some of those channels have videos complaining quite loudly about youtube, some are tech channels that do talk about the fediverse sometimes, some aren’t even aware of the fediverse but might be interested.
It might be worth drafting a message that explains that it won’t cost them anything to just sign up to an instance mirror their videos to peertube as a first step. For more technical channels, they can setup their own peertube instance and mirror there - together or alone.
There might be more incentives, but that’s for the community to discuss. What do you think?
I’m not sure about all of them, but I’m pretty sure we can get the privacy aware and FOSS ones here. Maybe even PewDiePie, with the recent pro linux videos. Most popular channels there, are there because they make money from it, so it is probably not possible to get them over to PeerTube.
Maybe we can get permission from the creators to mirror their videos on PeerTube though, which would be pretty good.