A bit of a close-minded approach. Using that logic, there should be only one manufacturer of any product as the others don't have enough sales volume and if everyone uses that logic, they never would. We should all have a F150, a Camry and a JD tractor.
As a Jeep fan, you don't even follow your own logic. Much lower sales on Jeep than almost any other make in the US. Somehow, they still manage to make parts for them. Even if you use the parent company, Stellanis is quite a ways down the list of manufacturers in sales volume.
Seems like you (and many others) fall victim to the marketing of Kubota and Deere as they falsely try to justify their exorbitant prices by implying or outright stating that the competition isn't in it for the long haul. TYM has been doing this for 75 years. Maybe a bit new to selling tractors under their own name in the US, but hardly a newcomer. Ditto Yanmar.