The creator of a thing can decide to remove their copy of it and not license it further.

Someone else can pay for a token that signifies... something. At the very least, that they've purchased a token. I'm not sure what more.

Although unlike the author I'm okay with only the people who were so into a "cute baby" level video that they downloaded it for retaining a copy. Popular media getting forgotten in the churn of history is rather normal and it's worked out okay so far.