>Now think what happens when a Monsanto executive realizes that paying the occasional legal suit is cheaper than keeping their packing plants clean and disease-free.

The maximum allowable punishments under libertarian law would be very harsh. Endangering swaths of people's lives could result in that executive's death. It wouldn't be just a matter of paying off a small bribe. For details on the theory of proportionality, see this PDF from page 12 especially: http://www.walterblock.com/wp-content/uploads/publications/b...