Would think the cost of production would exceed any profit to be made. Plus harvest would be an issue.
There are some pretty intense subsidies on rice, sugar and honey as well. I think that has to do with keeping some domestic production for protection in trade situations.
I wish we could get away from the vertical integration and back to local production. We could solve so many problems if we started farming our lands like we did before corporate farming. And the corporate farmers like AI aren't getting rich either. They have to take on more and more acreage to justify the larger machinery. Cotton harvest now is pretty much all custom work, since the harvesters are a quarter million apiece. You can't afford own one for just 2000 acres of cotton.
I worked for a corporate farm in high school, kind of like AI's. The farmer told me then, back in the 70s that our soil wasn't anything but structure, we used it to hold up plants, we added all the nutrients. He was right about that.
I'd really like to see a push, some incentive programs to go back more to small natural farms. Those highlighted on Kiss the Soil are what I am alluding to.