Self-hosting PeerTube is trivial. So is self-hosting NextCloud (DropBox alternative). So is self-hosting PixelFed (Instagram alternative). So is self-hosting Mastodon, RocketChat, Code-Server (VSCode) etc. Rent a $5/month VPS and have 100% control over what you publish and federate with like-minded as you like. At some point those services will support 90% of all monopoly features and 99% features you care about. If you are worried about some unwanted illegal content coming in from federated users, it's trivial to get Deep Learning filters to remove 99% of unwanted content (e.g. porn) as well. You can decide the rules.