JD is on where near a monopoly on anything other than green paint. Mahindra, Case IH, Kubota, New Holland, and on and on are all equally available, and in most cases cheaper, alternatives that function just as well. We own both a Case and a Kubota.
It's probably a lot like Apple: lots of people absolutely insist on buying from them, and then complain when they get abused. But if you suggest they look at alternatives, they either dismiss it out-of-hand as completely impossible, or worse they get offended.