Unfortunately, YouTube exists because content creators make money out of the ads.
But free content video is possible with a peer to peer protocol. The content creator get the responsibility to keep the seed alive. The more popular, the more it gets shared, the more it’s available.
But content creators don’t work for free, and public libraries don’t have the resources to store all the dumb content people deem necessary to make.
Reminder: give money to Wikipedia. This thing is a miracle.