google absolutely wants to protect their users privacy from third parties. their ideal situation would be if they're the only one's knowing everything about their users so they can allow third parties to advertise things to their users. if they'd leak any of this information, they'd be compromising their main business model.

so yes, people can trust google to do their everything to keep their information from reaching anyone else, including forcing said third parties to undergo paid audits to verify that nobody is leeching their user data.

for some reason, a lot of people got it into their head that google literally sells information. i'm not sure why this ever started, as - at least as far as i am aware - google never tried to do anything even remotely like that

They still have all this data on users. They don’t even tell you what they have. They have the BS marketing of Google Takeout. It includes nothing about the profile they have made on me. The logs and data they have on what I have clicked, etc.

Google wants to even protect you or I from knowing how much data they have. That’s not the protection any one should want.