The problem is that there is no way for it to be targeted to work on ONLY this one specific phone. Once the software is created it could be used in the same fashion on any other phone of the same type.

Your last point is the most salient one. This tool, once it exists, is not going to magically disappear when the FBI unlocks this one phone. Does anyone think the FBI will toss it away? No, they’re going to hold on to it (why wouldn’t they?) and every police department and investigative agency in the country is going…

After which, you have our solemn word, we promise to discard this custom OS and would never, ever dream of using it again. Or, wait, we’ll send a copy to every FBI office and major police jurisdiction, and tell them to only use it when it’s really important (their call) and keep secure when they’re not using it (a…

Don’t sit there chuckling if you use an Android, by the way. If Apple is compelled to create this malware, it will affect anyone who uses technology to communicate, to bank, to shop, to do pretty much anything.