I don't see malice sufficiently addressed. A billionaire could identify arbitrary copyright arbitrage opportunities in particular communities or among groups of

I don't see malice sufficiently addressed. A billionaire could identify arbitrary copyright arbitrage opportunities in particular communities or among groups of individuals and buy out copyright, and hold on to them out of spite until the value of a property is lost, or manipulate memes and the spread of culture. Deliberately giving things to the public domain, software licensing, and other issues arise in the context of hostility and malice and bad people existing. Stuff like this would only work if everyone participated in good faith. By the time we figure out any sort of sensible copyright rules, AI will have made a total mockery of our systems, anyway.