Google, in general, does not sell or give away data. What they do is charge advertisers to target ads to users based on that data. The distinction is that 3rd

Google, in general, does not sell or give away data. What they do is charge advertisers to target ads to users based on that data. The distinction is that 3rd parties only have access to Google UIs or APIs based around ad targeting selectors. There is no API for 3rd parties to just download raw user data from Google. This is in contrast to Facebook, which used to allow “apps” on their platform to suck down raw user profile data in large quantities. It seems very likely that Google is using their user data for non-ad purposes, for example using Google Photos data to train ML image recognition engines, or using Gmail data to train conversational AI systems.