I don't dispute his claim that Edison was 'green' but this comment was beyond stupid:
How can inventor-entrepreneurs like Edison make a profit if every time they try to make a technological advance some nut in Congress pulls the rug out from under the them and their breakthroughs?
Basically, what he's saying is that inventor-entrepreneurs can ONLY succeed if someone bans their competitors. WTF? If you have the better mousetrap and assuming no one gets government help of any sort, you'll win. If you aren't winning, then go back to the lab and make it even better.
This is something Thomas Edison understood well but his Professor-of-English great-grandson obviously doesn't get. Hey, Prof, leave economic theory to people who understand it and stick to poetry or whatever it is you do.