Let's say I write a book.
If I don't want people copying it, people shouldn't be copying it. I don't care if it's been 500 years. It's my book.
This is a weird thread. Lots of people for artists losing control of their creations quickly while simultaneously against artist creations being used by others without consent. Just my perspective but why should artists lose control of their own creations at all? The problem in copyright is tech companies doing patent thickets; not artists.
Even artistic creations held by corporations. Waiting for Marvel stuff to hit public domain to publish a bunch of Marvel novels since they can't protect their creations any more? Why is that acceptable? If someone creates something and doesn't want it stolen, I don't give a fuck what the law says, stealing it is theft. The thief should instead be using Marvel stuff as inspiration as they make their own universe; not just waiting an amount of time before stealing someone else's creation without consent. It isn't holding progress back at all to make novel artistic creations instead of steal others. Art = very different from tech.
when I publish a book, to steal it is consenting to be Luigi'd; no matter how long ago it came out.