Interesting that he's going to auction off the copyrights that they have...
I've held the view for a long time that copyrights, patents, and other "intellectual property" should be treated like physical property, specifically real estate.
Imagine, in trade for having exclusive rights to something, you would pay tax commensurate with the amount of revenue you derive for it. You could even keep an idea protected in perpetuity, assuming the tax is progressively structured so that the general public benefits from you doing so.