No, those are just the only two options for Monsanto to guarantee sustained profits without producing further advances. It's not clear that they deserve to continue making money like that. From a macroeconomic perspective of trying to feed the most people for the least money, it's almost certainly better to let Monsanto's inherently self-duplicating (and thus not naturally supply-limited) product do it's thing, let their legal department and genetic DRM research stop wasting money, and have their productive research be directly funded by the government if it looks promising enough.