Ah yes, bully the bully. I'm sure the NSA will remember this legal defense when its on trial for corporate espionage. We only hacked & spied on Apple because they were bullying 3rd party developers!
The NSA will never be on trial for corporate espionage, so I'm not sure what you're going on about.
The problem with the NSA is that they're a government entity doing something very dangerous from a democratic point of view and of dubious value overall. It's a totally different problem from private citizens publishing stuff they may or may not be entitled to.
Turnabout is fair play? I don't know, but that's the sentiment behind this sort of action.
Look at the positive: I bet loads of corporate execs are now going to give their IT teams extra money to "not end up like those Sony guys".