I have a friend that services and repairs combine harvesters for a living. He tells me that he rarely has to do any welding or heavy lifting any more because the reliability and mechanics of the machines have become very reliable.
He's spends most of his time diagnosing on-board electronics. Which he says is the root of the discord with farmers. They think of their tractor like a hoe, you plonk it in the ground and get going. Where as the modern farm tractor or combine is actually a complex set of computer systems with literally thousands of sensors.
Farmers see the manufacturer as trying to extort on-going revenue, whereas manufacturers are trying to provide a new generation of smart farming. Getting 1 cm precision of sowing and fertiliser spreading is the innovation that the technology is delivering. The problem is that nobody wants to pay for that ongoing data processing.
This is going to happen with cars as well. It seems to me that people should rent/lease rather than buy because of this constant need for updates and servicing.