Farmers jailbreaking John Deere tractors to repair them - video

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So is John Deere going to provide all the specifications for the serial OBD communication protocol they have? Pretty much requires that to repair most of their engine driven equipment. I see the document allows farmers access, but at what cost for manuals and diagnostic equipment. I don't think farmers won anything here.
Still need legislation for all manufactures to publish any proprietary diagnostic access, so 3rd parties can design the equipment.

On a slightly different note, The Russian invasion of Ukraine, they stole John Deere farm equipment, This equipment was at dealerships, John Deere was able to disable the equipment as it's somehow internet connect with what I would guess is cell phone enabled.