This isn't like coming up with a better lightbulb that cost $2 to manufacture and will sell millions. And while the large farms may cycle through their equipment in 5 years, a small farmer may keep his in operation for 20+ years, so there's not a whole lot of equipment turnover for an upstart to break into.

For example, can you bioengineer bugs that keep plants safe, but eat weeds or pests? This is part of the tractor's job: chemical spray. Can you create a swarm of planters to efficiently distribute the seed? Can you do either of these or more with an open platform? Can you survive the onslaught of legal attack from the megaliths you're trying to topple?

If neither foes nor loving friends can hurt you, If all men count with you, but none too much; If you can fill the unforgiving minute With sixty seconds’ worth of distance run, Yours is the Earth and everything that’s in it, And—which is more—you’ll be a Man, my son!