Gosh, how did the pollen get to those fields? Did the target farmer do anything to collect it?
Oh, wait, that seed belonging to said offending farmer is private property. You propose that Monsanto's patent precludes their use of their private property, corn that they planted, weeded, and harvested on their soil. What if they don't want Monsanto's damned Bt corn pollen because it renders their product toxic? What if they want to be GMO free. Monsanto has taken that option from them. Can they sue? If Monsanto doesn't want people using their pollen then they should control keep it under their control.
At least you are honest about the "shilling."
What part of “they don’t sue due to drifting pollen” do you not understand? If a farmer signs a seed purchase contract stating they will not save seed and then they save seed, well, they are in fact deliberately violating the contract and patent law. Drifting pollen had nothing to do with it.
You know how Monsanto finds out who is saving seed in violation of their contract? Other farmers report them because they know whose screwing them by not paying the licensing fees thus gaining an unfair market advantage. Too many cheats willing to undercut the non cheaters on price and the market price collapses and the non cheats lose money or go bankrupt.