Monsanto is a company that would probably love to have seeds that only are good for one generation and need to be purchased every planting season (they already do have these for some of their innovations, but I bet they'd love to have total control over the crop). Now, that's neither something that should spread into the wild nor something one company should have control over (closed-source, single-point-of-failure and all that).
One of their big cash cows in poor countries where they have a lot of influence is using their seeds to basically steal land. The seeds from one field that paid for them will blow into another and grow there next season. A Monsanto lawyer will then serve papers to the farmer next door who, through no fault of his own, has some Monsanto plants growing within his normal crop. Of course they sue him for some ridiculous amount he can't possibly pay and he ends up losing his land. Profitable business model.
