After 10 or so years of this, enough farmers and other biotech competitors that had been steamrolled this massive Mid-Western company, that they joined forces with environmentalist who dubbed genetically modified organisms (GMO's) Frankenfood. That, in turn, has created a growing PR nightmare for Monsanto and GMO's (sounds like monster, right) - for which they are the symbolic epicenter. GMOs now face bans in Europe and labeling issues in the US.
Florida Shoots First
Most of all, Monsanto and GMO's face a sense of public repugnance even though farmers tend to believe that nature has always genetically modified foods. Such is the payback of bad publicity.
Read the NY Times Can GMO Tech Save the Orange? and compare.