> We grant copyrights to encourage production of new works for the benefit of the public
Which includes giving creators royalty rights that can be passed on to their heirs, so the elder author can finish their manuscript on their deathbed as a gift to their family.
Has this ever happened, or is it a scenario you made up in your mind?
I know a few great works were published posthumously, but most of these were because somebody thought it was really important to share, not because it was a golden goose they wanted to start... milking.
Congress has currently chosen a duration of life + 70, but my point is that it's absurdly far beyond anything necessary to encourage the production of new works. When you consider the costs of copyright monopolies to the public, it's clearly out of whack. As I said, the majority of revenue from copyrighted works happens in the first couple of years of release.