My two cents:
1. Decentralization. I run my own PeerTube instance, with a bunch of my videos and a few viewers per day, and it requires basically zero maintenance. A RPi4 with a decent SSD is more than enough to run it, and unless you get hundreds of views per minute a decent home broadband connection is also more than enough. If you get more traffic, you can always ask people to contribute - and most of the folks on decentralized networks usually are happy to contribute. Plus, being ActivityPub compatible, from a single Mastodon or PeerTube profile, or even any RSS/Atom reader, you can follow channels on any instance. We often underestimate how easy it has become to run your own stuff if you know how to run a Docker container, and how easy it is to use syndacation and open protocols to publish to one place and broadcast to everyone. For some reason, the "you need a big centralized platform with big servers that can autoscale, big financial backing and a big surveillance adware business model in order to serve some .mp4 files" dogma is hard to kill.
2. Creators-run platforms. I've been an early supporter of Nebula and I keep contributing to them. I get all the videos that my favourite educational creators post on YouTube, plus exclusive content, without ads and without YouTube's hostile practices, for ~$3/month, and I know that the platform is run by the creators themselves, so the money goes directly to them. The success of platforms like Nebula sends a clear message to YouTube: people are happier to pay a monthly subscription to a service that only offers a curated subset of what's available on YouTube, knowing that that money goes directly to the creators, rather than watching ads every 5 minutes on YouTube and getting all of Google's privacy-invasive and developer-hostile business practices.