What Apple are doing is removing the middleman, purely making this about transactions, not data. This means they're avoiding selling private information as a revenue stream.
This affects you, it causes a filter bubble http://en.wikipedia.org/wiki/Filter_bubble and means you're effectively less free to make a truly informed decision.
So not sharing your private information by default, is fundamental to your freedom. That's why we should all care, and why this is a great decision by Apple.