Copyright holders should be required to make content public domain and available to the Library of Congress when they nuke it to claim a tax write off. https://mastodon.social/@tess/110595798590233852
I don't publish a lot but for tech stuff I write (mostly blogs but I have a book on socialist housing in the works) I specify that 7 years after publication, it becomes CC0.
Personally I think copyright should be short (originally was 17 years I think, in America anyway) - regardless of what is published. Parents even shorter.