just like with cars bought by companies and rentals, construction and farm machines are bought mostly with the warranty in mind.

just like in software, for every one nerd that wants to fix things themselves, there are millions who do not. and those folks don't even change the oil to not lose warranty. and newer models even phone home (to the dealer!) when the engine is being abused. and it's actually sold to the buyer as a feature, because the phone home system can be used in case of theft.

do you rater sell one hactor or a million tractors?