Did John Deere turn off the old globes so the auto steer doesn’t work. Or the government

No, more simple than that...John Deere running the table and forcing us to pay more money for their software, firmware and hardware...ask yourself...why isn't there a problem with Raven or Case or Trimble? The "Green" is just too proud of their brand...and Ag is paying them for it...farmers will never get ahead of any period of time when we are selling wholesale and buying retail.

Yes they do, I've helped set up a few of them

Will the ITC extend work with the brown box display as well?

Itc extend works pretty good for field cultivating. Used it on about 400 acres now.

John Deere turned them off. The satellite band is scheduled to be shut down in a few years though. first heard 2024, now hearing 2026. So you have a few years, but it will come to an end at some point.

Idk but here is the fix. http://www.agra-gps.com/product/itcextend.html