Is it though? There's no legal precedent that would allow for software vendors to force device manufacturers to allow their software to be run on the manufacturer's hardware. Otherwise we'd see Android on iPhones, legally-mandated Facebook integration on everything, custom car firmware etc.
That violates the sterile cockpit rule and is a HUGE no no. Pilots can only read a book or talk to cabin crew if the control of the aircraft is with the other human pilot in the cockpit. Someone has to be ready to take control of the aircraft at a moment's notice in the case of a sensor, software, or mechanical failure.
A co-driver in the driving world is either a Rally co-pilot who gives extremely detailed navigation instructions or someone who will literally get into the drivers seat to relieve the duties of the other driver on long road trips. It's a much more involved process than what an airplane autopilot can do.
The word literally everyone uses in that scenario is "navigate". Aside from rally drivers, nobody in the history of ever has used co-pilot in that scenario..