Why American Farmers Are Hacking Their Tractors with Ukrainian Firmware

> John Deere and other manufacturers have made it impossible to perform "unauthorized" repair on farm equipment, which farmers see as an attack on their sovereignty

I think this is the key point. All other harms of DRM are just symptoms, enabled by loss of sovereignty - of having some corporation make itself arbiter of what you're allowed to do with hardware that is supposedly yours.

Add (2017) to the title, please.

Previously: https://hn.algolia.com/?q=john+deere