A more innovative approach, I think, would be for the government to buy out leading textbooks at a premium and after holding an auction to determine the fair price. This gives you the best of both worlds -- rewards for individuals' efforts but the ability to use the published material in an unrestricted way in the future. Plus you avoid the loss associated with monopoly rights granted via copyright and wasted duplicative textbook efforts.
This ideas has been proposed more broadly for patents by Prof. Michael Kremer of Harvard. Its logic is pretty compelling:
http://www.slate.com/articles/arts/everyday_economics/2000/0...