Please, be serious for a moment. It would have to be an amount of money to be worth the risk and therefore show up in quarterlies. Also there would have to be a buyer. And there would have to be a bunch of companies Apple shopped their data to. And thousands of employees and ex-employees. You really think Apple could keep a thousand ex-employees quiet? Think about it for a moment—if they were doing it, its leaking would be a certainty.
And if it leaked, Apple would be in very deep doo-doo with easily the largest class action the company has ever been hit with. It would be an unacceptable risk to even contemplate such a stupid idea. All for what, a few extra pennies?
I don't see why they can't make some extra by making you the product as well.
Also, people who are into Apple are known to be willing to pay for stuff. A very lucrative group for everyone.