[daveFNbuck]

Aren't the licensed crops generally designed to not spread organically?

We're already dependent on too few crops. Genetic modification gives us more ways to increase diversity and preserve crops that would otherwise fall out of use.

[TallGuyShort]

I've definitely seen cases where someone was accused of distributing seeds to a nearby farm but claimed they hadn't. I'm inclined to believe that's at least possible. To quote the mathematician from Jurassic Park, "life will find a way" - he's not wrong.