It seems obvious to me. Want to illegally snoop on someone’s iMessages? Don’t compromise Tim Cook’s plausible deniability, just get an asset to climb the ladder until they can touch the systems that send the list of keys to the target device. Same goes for signing malware binaries for evil maid against iOS devices, chromebooks, et c. There are controls you can put in place as an organization to make this harder, but not impossible; eventually human beings are going to be handling keys and senior management isn’t always going to be in the room to make sure NSLs aren’t being handed out.
“Keep this quiet or go to the same jail in which Manning was tortured basically to death” is a pretty persuasive argument.
The fact that Google was asleep at the wheel so long wrt encryption of internal network WAN links (I mean, wikipedia has an article about the double-hull sub that the navy uses to tap intercontinental fibers) suggests to me that most Googlers (and despite organizational differences, also most Apple and FB and Amazon staff (outside of govcloud)) simply aren’t thinking about the illegal lengths to which the military will go to obtain huge amounts of information about possible threats to their safety, security, or persistence methods (e.g. whistleblowers).
It’s like the industrial rank and file never read the military-industrial complex speech, even while hearing their bosses take off from Moffet using taxpayer jet fuel. [1]
[1] https://www.wsj.com/articles/google-jet-fleet-loses-a-nasa-f...