There is nothing in the JD tractors that cannot be accomplished with open source. Nothing.

Most recently I saw it as retrofit in a Workmaster 60. It had not only engine control, but lane tracking, soil sampling, and more. Al kinds of cameras, relays, and stuff. It was a Frankenstein's dream, but it worked.

The cost offset justification is horse lemons. Much of JD's smarts come from off the shelf code and material, including open source.