[skj]

If we want to make the analogy apt, it would be like the mobile service saying "To make a phone call, please first call the kill-yourself company and tell them where you are so they can kill you."

Google does not sell the information. It puts up ads that users may (or may not!) click on. The clicking is the point at which the information transfer occurs, and it is voluntary and transparent. Or as transparent as it can be, anyway - if you are unaware of how the internet works when you click on a link, that does not make Google culpable for presenting said link.

The information Google has about the user is never given to anyone, least of all the ad buyers.