The EFF has been working hard in recent days to convince the Copyright Office that making jailbreaks on the iPhone legal is critical to preserving individual user rights. Apple has asserted the opposite, reminding them and the world that the iPhone is their baby and you'd better not jailbreak it if you know what is good for you. Under normal circumstances, you'd think that with Apple being the creator of the phone and having a massive financial backing, it wouldn't have any problems getting their way. The EFF is getting a lot of outside support, however, including from Mozilla.
The CEO of Mozilla, John Lilly, has come forward to voice direct support for the EFF's cause, saying that allowing a jailbreak is a choice, a good one at that, which shouldn't come with the stigma of being criminalized. Whether or not Mozilla's support has anything to do with the development of a mobile Firefox browser isn't mentioned, but it is clearly possible. Apple has prevented applications from appearing on the App Store multiple times that "compete" with something Apple provides. It doesn't take much imagination to picture Apple denying Mozilla a Firefox release for the iPhone, claiming it competes with Safari.
Mozilla isn't the only software development company that is backing the EFF in their efforts against Apple. Other companies, such as Skype, have been vocal about their discontent with Apple's politics surrounding the iPhone, whether it is their App Store or the platform restrictions. Regardless of what Apple's stance on the matter continues to be, however, they'll never be able to stop people from jailbreaking the phone.