It's the work of moments to put it in a contract that data sourced from you cannot be sold or provided to a third party without the law requiring it.
They choose not to do this.
Apple have invested heavily in their /marketing/
If you believe they won't flip on you the nanosecond it suits them I've got a bridge over here that might interest you...
Besides even if you believe the current people controlling Apple, all of them, you can't possibly know who will control it next year let alone in 5 or 10 years. This "I want to believe" garbage is just ridiculous. Seriously. You expect anything you like and Apple won't care a damn if your expectations are trashed for their profit or something else.
If they won't put it in a contract it only because they reserve the right to to flip you off. Hard and rough. No other reason.