Silly Green Monkey
Cowardly Lurking in the Shadows of Greatness
Could such a scenario be that a pathogen appears/mutates that attacks all kinds of a plant, but a patented strain has resistance or immunity to it, resulting in that patented strain being the only surviving quantity of the plant? Like if someone had a patent on a strain of potatoes, and another blight struck that took out Idaho Golds (planted by just about everyone).