Yup. Companies are pushing unlocking the devices into seriously illegal territory. Yes, in principle you can unlock anything - you can always kidnap the CEO and beat him with $4 crowbar until he gives you the key. In practice we would like to be able to do it without harming people.

I am not an Apple user but I cannot help but notice some kind of "jailbreak" business going on there. Could it, perhaps, involve breaching iPhone security in some way that could lead to loading arbitrary code with system privileged and even modyfing the OS itself? It sure looks this way from a cursory googling. It appears Apple had been and still is susceptible to various attacks. As is every other company.

It's never going to be impossible to access these devices (and I suspect Apple deliberately doesn't make it too hard). But every year it gets more expensive, riskier, and requires more specialised knowledge. Modern BluRay keys are already out of reach for a casual home user (speaking as someone who tried to play my own BluRays on Linux). Soon we'll be at the point where you need a cleanroom and an electron microscope to bypass protection.