Exactly who stole anything here?
Don't try to make a Guy Fawkes defense. No single act he did was a crime, per se, BUT he did try to blow up Parliament!
Possession of someone else's property without a good explanation of why you got it is pretty much evidence of participation in a theft to one degree or the other.
You will notice Apple wasn't going after the device ~ they had that ~ they went after his pictures of the design.
The kid who busted into Sarah Palin's emails probably thought what he did was legal ~ he's going to jail for a long time!
Remember, theft wasn't invented yesterday so everybody has had thousands of years to work their way through all the known or knowable theft schemes and have written laws to penalize people who involve themselves in them. I am confident the law will work for Apple to protect their interest in their own property.