Actually, Apple collects plenty of information. They collect app usage statistics, one of the reason why they banned collecting that type of information from th

Actually, Apple collects plenty of information. They collect app usage statistics, one of the reason why they banned collecting that type of information from third party apps is because Google and Apple have monopolies over that extremely valuable data. Being able to see trends in app usage, who's getting user engagement, is huge. No, your contact details aren't that interesting to them. But your life is still interesting in figuring out how to direct their products. Don't be fooled just because they aren't sticking ads in your face.