[piokoch]

"unintended consequences and liability cascades from imperfect repair" - I would say this is not the greatest argument. If someone messes with the equipment outside official channel, loses equipment guarantee, so there is no liability on the producer side.

If some firmware is buggy and pose cybersecurity issues, hiding that will not help, as sooner or later someone will discover those bugs anyway (and will turn good old John Deere into B-class horror movie serial killer machine).

So I am not buying manufacturers arguments. If they were honest, they would said openly they want to earn money on overpriced service because CEO wants to earn more and stakeholders are after him.