Monsanto has never sued a farmer when trace amounts of our patented seeds or traits were present in the farmer’s field as an accident or as a result of inadvertent means such as cross pollination. It is truly that simple, and we have publicly made that commitment. (Please see additional information that I provided on a similar question: http://gmoanswers.com/ask/why-has-monsanto-sued-farmers-who-no-fault-volition-their-own-had-their-crops-contaminated-gmo).
Regarding your question about food, I want to first clarify that Monsanto is primarily a seed company that sells seeds to farmers. If you consider the U.S. market for corn and soybean seed, Monsanto’s seed brands would be roughly 1/3 of the market. There is one other company with a similar or larger seed share in corn; in soybeans, Monsanto¹s seed brands would be second in the market. In both corn and soybeans though, there are literally hundreds of other seed companies who sell corn and soybean seed to American farmers. Globally, while Monsanto is one of the largest commercial seed companies, what we offer is less than 5% of the world¹s seeds.