There is people that oppose GMOs business model.

"...Monsanto originally sold the soybeans to farmers under a limited use license that prohibited the farmer-buyer from using the seeds for more than a single season or from saving any seed produced from the crop for replanting..." https://en.wikipedia.org/wiki/Bowman_v._Monsanto_Co.

Global farming should not depend on patented seeds that can be made scarce as an economic strategy. It is, at least, extremely risky from an economic point of view. But it gets worse from a legal point of view.

I'm all for developing new ways of farming. But if patents are so bad for software, they can be worse if we allow to patent gens.