I think most people have no idea how thin agricultural margins are to start with. They see that some farmer bought a $500,000 combine and think they got money just to throw around, but that combine is expected to last the next 40+ years and work near flawlessly for every harvest while performing multiple different functions simultaneously in a dirty and uneven environment. There is no alternative to a combine harvester since it is replacing the work of reaping, threshing, and winnowing all at once which without a combine would take thousands of man hours to do by hand every harvest. They might not expect for it to pay itself off for 30+ years.
Nearly all farms operate on single digit percentage returns, a large number of them have been floating along on 1% or less for decades hoping to hit a bumper crop once or twice more in their life time. If they throw a million dollars at fertilizer, fuel, seeds, maintenance for their tractors, barns, silos, dryers, and any other specialized equipment for their particular crop, then earning $50,000 on that million dollar investment would be considered a great success. Earning $10,000 would still be considered some success because it is not uncommon to run multiple negative years in a row.
Yield can vary 30% in a year from normal weather patterns, and the market can vary just as much or more, and they don't always align in a farmer's favor.
So if your tech can't handle 99.99% uptime, and be fixed in the field when it does break on short notice with basic hand tools, farmers don't want it. A single failure at the wrong time can dump half of your million dollar investment down the drain which you were only hoping to make a couple dollars from to start with. It could set them back a literal decade or more financially because some shitty widget or sensor failed and they either couldn't repair it or the fault wasn't detected until it was too late.