I don’t want to visit independent creators’ websites to find their content - all with different UIs, etc. YouTube gives me a clean, centralized way to access content where I know I will be able to stream 4K and view content offline. This feels massively more convenient to me than having to maintain a catalog of offline videos…
While I think we all agree that centralization of control isn’t great, the consumer gets tremendous value from centralization and this value doesn’t get talked about enough.
Finally your assertion of “this content should belong to everyone” is idealistic. Who is going to pay to store and stream this content? What about the copyright of the actual content creators?