Its just more proof we don't actually "own" what we buy. Our cell phones are, legally, owned by the phone manufacturer, which is why they can force your phone to update and kill your battery life to "encourage" you to buy a newer model.

Farmers don't "own" their tractors, and John Deere is trying to force them into expensive repairs that farmers typically would do themselves to avoid downtime at critical times of the year, like planting and harvest.