The other value is… copyright: Because

Copyright is the one thing I can't think of a way to work around in a decentralized fashion. There is very little to stop people from hosting non-free movies, TV shows, or other people's content. Community policing can only do so much.

The lack of proper copywriter policing prevents you from using their centralized monetization strategy. If you get paid to let them overlay ads, people will just record and repost your videos. If you use sponsorship, Sponsorblock will eat your lunch. You can try to do lockdown and Patreon; eventually, someone will copy and repost your stuff for free. Unauthorized copying ties closely with monetization. Without monetization, the lion's share of content providers aren't going to bother.

Most of the other problems are technical issues that can be solved, but there has to be a willingness to share a little more resources at the client level and enough money in it for people to develop the systems. The TB/day problem would evaporate if people had to pay a small amount for the GB of garbage they're uploading to YouTube to get rich quick. I'm honestly shocked they haven't added tiny fees for storage at their basic cost for the service. If your stuff takes off, they pay you for the ad view, if it doesn't take off, you'll be likely to remove the worthless burden from their system.