Actually the main byproduct is starch...post process feed products are only a small amount of the coproducts and all are mixed with whole grains before sold to consumers. Ethanol has been around a long time and not many things that you eat, wear or touch is exempt from the process. There's a lot at stake when you see the big picture. The ethanol industry keeps farmers from going broke, period. Many of your larger producers also own the logistics firms which move the raw and finished materials, grain elevators, feed mills, etc.