This would really be amazing. Honest concern... How does the fertilizer industry fight this? There are billions of dollars a year at stake here. Nobody faces billions of lost revenue without a fight.
At some point, there's not enough money you can lobby with compared to the real world needs and competing lobbies (here: food/nmonsanto etc) and the balance shifts. Also, in non-US countries people might take a more pragmatic approach, giving new tech a leg up.
E.g., China, India might not care so much about the US fertilizer lobby.
I just don't see any other angle to attack nitrogen fixing corn other than to make some sort of GMO boogeyman out of it. It is really amazing the amount of misinformation that is populating the world for the purpose of protecting cash cows.
sidenote Thanks for the downvotes :) apparently my sarcasm hit a nerve.
I have a hard time believing that this will become a huge problem in China and India particularly. The gov there isn't interested in giving these storylines a leg up, and people have other problems, such as Melamine-contaminated baby formula (or having food shortages)