I like that your solution to corporations locking things away forever is a new system that would immediately excludes individual citizens and ties the capability to remove a cultural good from the public to wealth.

The main problems with current copyright laws, I think, is the creators need to sell their right to one of a handful of powerful corporations to make money at all, then those corporations grip on their rights and monopolize it, even if it means something isn't available at all. A better idea would be author's rights that can't be sold, and licensing that can't be denied. That way there still is monetary incentives to create, but cultural goods remain available to the public.