What financial gain do they get from this?
A: risk billions in stock value and customer purchases for basically a "thanks" from the gov? One whistleblower would also have the real ability of becoming world famous for "exposing" apple.
B: Get publicity actually resisting the gov and not lying, what is the gov gonna do? I imagine it has and does happen but I also imagine there's a crying tim apple being dragged through it painfully.
Unlike google I just don't see the financial positives for them to do it beyond massive arm twisting. For many companies the risk of destroying their entire value to customers is just not worth it.
The only money in it is mass scale data collection for training data and ads, if they aren't doing that any other method is the opposite of valuable it's a massive liability.