I'm with dhlizard. I don't think Apple cares so much about jailbreaking. They fought it really hard but once the library of congress said jailbreaking and unlocking we're not illegal, Apple conveniently stopped publicly fighting jailbreaking. I think they were fighting it so hard before that ruling because of the unlocking capabilities and not the jailbreaking capabilities. It was critical for Apple to fight it because they needed to show their carriers with whom they do business that if a customer purchased a subsidized phone then Apple would do everything in their power to prevent that person from easily jailbreaking, unlocking, and leaving said carrier. But once it was ruled legal to do such modifications, Apple stopped publicly fighting jailbreaking.
Apple has still not patched the exploit in 5.1.1. Why? Because in order for it to be harmful, your device has to be physically connected to a computer and then the user has to manually start the exploit. Basically, there's low risk involved for the unaware consumer. Plus, once they patch a firmware, all new devices get shipped with the updated iOS. Apple does not have any major problems with jailbreakers. It is virtually impossible to permanently damage your phone. Plus it's an ecosystem which promotes innovation. Generally speaking, Apple LOVES having the global impression that they produce the safest and securest devices on the market. But they also don't hate the idea that many of their consumers jailbreak their devices. Apple gets to steal the best jailbreak innovations and claim it their own in a future iOS upgrade. Plus if they permanently prevented jailbreaking, they know they would lose many customers to android devices.
That's my understanding of Apple's stance on jailbreaking. To summarize, they were mainly against jailbreaking because that easily allowed for unlocking. Apple needed to show support to their official carriers that they would try and prevent the loss of customers to unauthorized carriers. But once it became a clearly defined debate and that it was legal to jailbreak and unlock, Apple stopped putting so many resources into fighting jailbreaks.
