We are talking about large industrial farms, these things are on a lease, they are replaced, maintenance is contracted. I live in farm country, the problem is not mechanical, but many keep treating it like a mechanic should be able to fix it.
Some smarter companies hired IT people like me on a consultancy basis and do fix these things on occasion or talk to the vendor to figure out what the hell is wrong, rarely did I find that the vendor is hostile unless you did something to piss the engineer on the other end off.
The problem is that everyone including Deere and the farmer underestimated the cost of computer maintenance. I have been part of a startup with the same mentality, they were going to upend the digital signage market with cheap Raspberry Pi. They went under because the hardware is the least of your problems when it comes to remote hardware management, software that works in the worst conditions, that can be updated in the worst conditions etc.
You want a âoesmartâ farm, that exists, but if it is not 100% fault tolerant or foolproof, you will have a tractor stuck in the mud and someone with an engineering degree will have to strap on some boots and a military grade rugged laptop and the people are very hard to find.