Markets do not work good or bad. The have no conscience or morality. The function of a market is to allow for the exchange of goods and services. The exchange can be free, fair, rigged, profitable, or unprofitable.
Thats not unique to corn or anything else in the marketplace. Why are farmers given a pass on supply and demand economics?. Too much crops and too low a price is called a signal. It signals that some of you need to quit growing this crop or lower your costs. The market is sending the signal but our governemt keeps overiding it because farmers want to their gibmedats.
Look wjhat happens in oil and gas. Want to prop up the low prices in that market?
We can get along without oil, gas, and a multitude of other things.
We can’t get along without food.