Symfonium is pretty good as a one time purchase.

I don’t think anybody’s tried exactly nebula-style, but there is already https://newellijay.tv which seems to be a kind of video-outgrowth of an existing rural makerspace? Pretty cool project from what I’m seeing

PeerTube is not really intended as a platform, even less so than most fediverse projects. As it stands, the best way to think about PeerTube is sans discovery mechanisms because I don’t think any are planned. With this in mind, peertube is best thought of as the video extension of the fediverse and the discovery niche is filled through word-of-mouth here and over on the microblogging side.

There are multiple monetization plugins and absolutely no built-in anti-monetization features. I don’t think it’s unreasonable for them to keep the base software monetization agnostic. They talked about this at length during the AMA a couple of weeks ago. I believe this one is the most popular: https://github.com/samlich/peertube-plugin-web-monetization

No reason a Nebula-type model couldn’t see success on peertube

Love Obsidian and linked notes in general. The potential utility there is insane but it’s such a steep learning curve. I really think that in the not too distant future they’ll be teaching it in schools.