Monsanto has tried to control the market for genetically altered corn and soybean seeds. Monsanto spent billions in the 1980's to invent specialized seeds and sold the rights to make them to big seed companies like Pioneer.
If they drive the price too high for genetically altered seed, the farmers can revert to simply hybrid or even back to heritage. That would be an eye-opener, wouldn't it?
Save seed and plant it. Every farmer should do that with 10 to 20 acres every year, anyway, just to keep it viable. Yield would be smaller, but satisfaction would be greater, and cost would be less.