[_rknLA]

To add onto this, in addition to the governmental threat, another point that Cook is trying to make is that security is hard. It's hard for the government, which he backs up by citing breaches, and it's hard for Apple (which he omits, but remember those iCloud breaches?).

I completely agree with your point about future governments and unchecked power, but there is also the point that, if Apple creates it, there is the possibility that organizations (or even just normal people) besides these anointed three-letter agencies may also have the same power to access a good chunk of your entire digital life (and the locations of your friends and family who use Find My Friends) if you were to lose your phone.

[KMag]

Good point. The thing Cook can't say publicly is that once Apple creates FBiOS, every government around the world, especially the most oppressive regimes, will block imports of iPhones until Apple gives them a copy or they steal it from the FBI.

I believe the FBI is asking for FBiOS to refuse to run if the IMEI doesn't match a compiled-in whitelist, but my understanding is that phone thieves routinely desolder a chip to change the IMEI on a stolen phone. The FBiOS is for use when they have physical access to the phone, so I don't believe the IMEI whitelist is a large hurdle to get over.

[_rknLA]

Not to mention that decompilers exist, and if you're going to go to the extent of desoldering a chip...

[KMag]

But firmware updates must be signed by Apple, so decompiling the update doesn't help much.