Re: Why would Apple (or anyone else) want to be in the loop?
People attack the weakest link.
Here I would corrupt a lowly police official, so that he would provide me with the officially-obtained keys to anyone I wanted. That's why creating a central repository is such a bad idea - it's a single place you need to attack to gain access to everything.
You could ask for a 20 key encryption process. The one target is the operator. And look how easy it is for crims to get data out of DVLA...