It's bad enough that apps are leaving the App Store because of sandboxing. You don't have to make shit up. The owner of a Mac can enable root access through the Directory Utility, completely legit, and can install and run code from any source without even doing so. Jailbreaking OS X makes no sense; there's no jail.
That's quite another story. If I have to write Sci-Fi: Perhaps an underground scene that use and code for older versions of OS X, patching the system themselves to get only the good parts of system updates, while staying out of Apple's redefinitions of the computing experience.