Yes, but in reality, grain farmers will not stop producing corn. They will continue to produce corn, soybeans, wheat. It is utopian to think that farmers will change their production completely. Grain producers with 1,000 hectares can change a segment of 100 hectares or so to produce soybeans, but ultimately, corn represents 60% of their production, while the remaining 40% is used for soybeans, wheat or barley. They will still produce those types of grains.
Beef producers will not change their production to pork. They will still produce beef. They may adapt to the ups and downs of the market, but when you are established in a production, you either stay or go. If everyone leaves, things are no further ahead.