The kind of control Apple seeks (to what purpose is irrelevant) is doomed to fail. You simple cannot control a device once it's in the possession of an 'adversary' (which in this context seems to be the owner of the device). Once the attacker (again, the owner of the phone who wants to jailbreak) has possession of the phone, he has complete control over it. I wonder if Apple has this internal posture that they should…
You assume apple overly cares about jailbreaking. I feel they wish it were impossible, but knowing that it isn't, just want to make it difficult enough 'normal people' don't do it and start breaking things on the phone and not understand their jailbreaking is what broke things. Hell, their AT&T contract was probably the only reason they got super up in arms about it anyhow. The reason Apple closes the security loopho…
Well, it's not that effective; it was worked around within days of showing up. Interestingly, to my knowledge, Google's similar check to prevent rooted devices playing movie rentals hasn't been worked around yet.