Neither. This is a thought experiment asking which company designs or builds products that would work in a mission critical vacuum, like a space mission.
Truthfully, no internet connected devices company builds stuff that just works anymore. Apple, Microsoft, all of the Android devices, the mantra is ship now, and fix problems in post. Any phone, tablet, or PC that you get now has a laundry list of updates waiting for it as soon as it's connected to the internet for the first time.
It shows why truly "mission critical" software, the stuff that powers nuclear power plants, satellites, spacecraft and aircraft, etc is so expensive. This stuff can't have any bugs, it can't be good enough. It has to be perfect, every time. Writing code like that requires a level of oversight at the institutional level, with ridiculous levels of testing for function, and error tolerance.