Apple is a business like any other, all it will take is for the right financial incentives for them to engage in data sharing if they don't already.
So it is simple: Apple has a choice. Google doesn’t.
Where? I can't identify a single non-tech-oriented person in my life who makes phone purchasing decisions based off of vague notions like privacy.
In fact, I'd say that the market does not demand privacy, it is ambivalent to it. I don't agree with ambivalence, but I also don't see consumers making privacy-minded purchases, either.
Google was once the "don't be evil" company.