This is just nonsense, it is extremely easy for farmers to buy non-GMO seed. Not only are there several other huge seed producers (Bayer, BASF, Dupont, Syngenta, Pioneer, etc.) that sell high-quality non-GMO seed, but there is a huge ecosystem of regional cooperative seed producers that make decent seed.

Farmers choose GMOs because they really do get more return on their investment. They aren't idiots and they aren't being forced.