If you're going to make these arguments about IP, you can also make them about property rights in general.
What is it about creative IP that makes it different to other kinds of family inheritance, or other kinds of rentier ownership?
Why does the argument that "Ownership rights should expire as soon as possible for the common good" not apply to huge land and property holdings, some of which have been passed down for centuries, with far more obvious economic and political effects than - say - Tolkien's descendants not needing a day job?
What is it about creative IP that makes it different to other kinds of family inheritance, or other kinds of rentier ownership?
Why does the argument that "Ownership rights should expire as soon as possible for the common good" not apply to huge land and property holdings, some of which have been passed down for centuries, with far more obvious economic and political effects than - say - Tolkien's descendants not needing a day job?