

“Elsa” does not feature in “The Snow Queen”. The kids in that story are Kai who gets abducted by the Snow Queen and Gerda who rescues him after a long journey which she manages by being good and very, very Christian. It’s also pretty racist, though tame by European 19th century standards. I don’t know who made up Elsa, but I guess they had long signed over their rights to Disney.
As the purpose of the system is what it does, the purpose of copyright is to centralise ownership and control. But then again that is also the purpose of the AI bubble. So they will fight, and the public is likely to lose.
Asimov being Asimov, the human consequences of the decline and fall of the galactic empire happens mostly of screen.
How exactly Trantor in a couple of hundred years went from a bustling planetary city to a planet where the last survivors scratch out a living from farming the former imperial grounds, is better left unexplored. If you are living in that world you are much more likely to be among the masses were stuff happens that will eventually be noted by Foundation scholars as “population decline”, than being a Foundation scholar.