That may be true of doctors with coffee bars, but it is absolutely NOT true of Google. Google is an advertising company, period. All of the thousand things they do are for one purpose: to sell advertising based on getting better and better at knowing the customer and targeting ads you're likely to click on.

Even if Google does say that some app is firewalled, the implied follow up is "...until customers stop caring" or "...until the law allows us to use it". Everything they do is intended to facilitate advertising, even if not yet.