One of the nice optional features you can get with a PC is the dual BIOS. Once a luxury extra, it's become affordable at least since 2009, when I bought my current Asus MoBo. I understand consoles have to make every possible saving to be able to offer a streamlined machine that can squeeze a lot more power from mid-low-end HW that on PC would give far lower performances, but while once a console came out of the factory with everything carefully tested and having to update its firmware was very rare, since this has become a lot more common, a dual firmware, with emergency unerasable FW on ROM could be considered a necessary feature to offer the fail-proof HW most console users legitimately expect.
Edit:
PS: unexperienced users could inadvertently turn the console off during updates, if there isn't a very clear warning about it also in the quick start version of the manual that is surely the only one most users will ever read, not to mention that a blackout can always happen and it doesn't ask for user permission.
