What prevents a farmer from simply switching back to the non-GMO seeds if the GMO option goes up in price? Or even ignoring that, switching to a different cheaper GMO seed from a different company?
I think that's the piece I and others are missing, isn't it ultimately a question of which seeds will make the farmer the most money? If a particular GMO seed suddenly become so expensive that either non-GMO or other GMO seeds are more cost-effective, why can't they just start using them instead?
Not really - if the market price for a crop is such that it depends on the greater volume which can be produced by GMO seeds, switching to non-GMO seeds becomes uneconomic.
Let's say GMO crops gives you a grain yield of 1-ton/acre and that non-GMO crops gives you a yield of 0.5-ton/acre. Now the market price is say set at $100/ton. This cuts down their earnings by half in the best case, all other inputs remaining the same.
Now if the GMO-seeds are controlled by a foreign entity, your entire agri output becomes dependent on that foreign entity not behaving badly. Whichever nation that controls the entity who owns the GMO-seed now has leverage over you.
So no, it isn't as simple as "switch back to using non-GMO seeds". This has to be carefully considered before adopting GMO-seeds.
I think that's the piece I and others are missing, isn't it ultimately a question of which seeds will make the farmer the most money? If a particular GMO seed suddenly become so expensive that either non-GMO or other GMO seeds are more cost-effective, why can't they just start using them instead?