What it does is give the possibility to invest in better genetics, which gives us the possibility to have better production. At that point, farmers are still able to get the previous genetics for less money, if they so wish.
But as we see in the canola industry, it seems that farmers will always go to the more expensive seeds, because they see the higher levels of productivity from it. They still have that choice. I believe they would have the choice with wheat or any other crop under UPOV 1991.