I think you make a good point that centralization provides a lot of value today. However, if the protocols that youtube used where open-source then it would be easier to create generic user interfaces open to all content makers. Similar to what another poster said about RSS feeds.

I think one of the deeper critiques you and several others have made is that someone still has to pay for storage and streaming. Today I am paying. I bought the additional hard disk to store this on. In addition to my time and effort to collect the files. In the future I would pay some amount each month to stream what I have if it gave me access to everyone else's (essentially staking my video files).

I don't mind paying for a good peer-to-peer service. In fact I feel that I am losing a lot more by staying with a legacy system. Hence backing up the videos I like even though I have no method of distributing them.