This is not an easy market to disrupt... the barrier to entry for manufacturing a $200,000 tractor or $500,000 combine is high, and the market is not that large.

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.