because this is their business model, selling as much information about you as possible.
Utterly wrong. This is not their business model. Their model is it to, via algorithms, identify people who are most likely to respond positively to a given ad and then to show them the ad. Nowhere does this involve selling any information about even a single individual to a third party. You are simply ill informed. Also, whatever Apple does or does not claim is entirely irrelevant. After all they're a competitor. Finally, to my knowledge, there is not a single documented case of Google ever selling personal data about anybody they're tracking.