A better way is to post a decrypt hash to the blockchain and a link to where the content is hosted. That proves you own the content because you own the keys that posted the hash.
That's one feature, I guess, but it doesn't make the content uncensorable or available in the event of hosting outages.
Your files? I'm not sure we are discussing the same thing. I'm talking about making a YouTube clone where everything included the videos are hosted on the blockchain.
It would never happen in a big way because the barrier to entry for YouTube is having a camera and an internet connection. What you're describing would be thousands of dollars.
YouTube still works reasonably well, but it's centralized, so censorship and demonetization will probably increase. I don't think a P2P distributed data store needs to be that pricey.