To add to the list of things that they "forget" to tell you, is that the real origin of copyright is fundamentally tied to censorship as well [1]

[1] https://en.wikipedia.org/wiki/History_of_copyright

Overall, IP seem to be a massive mistake.

Also: almost no works make any money at all after 5 years.

Copyright terms longer than a reasonable 5 years are only benefitting Disney and the other big copyright cartels.

They are not serving the purpose of copyright: To encourage creation.