You've misunderstood what the concept of jailbreaking means. Jailbreaking in the sense it is used for breaking out of the Apple defined jail/walled garden. Da

You've misunderstood what the concept of jailbreaking means. Jailbreaking in the sense it is used for breaking out of the Apple defined jail/walled garden. Darwin does not have jails as FreeBSD does. And the software they have for limiting what an application can do is not in any way similar to what a jail is.