Earlier quoted context omitted.
Assuming Google Analytics tying it all together.
And perhaps spying through Google searches and chrome? I guess Google never spies on you except by proxy via analytics - but then, if they correlate views on YouTube with analytic hits, that's not really true. Anyway, the above, as well as: > If that still doesn't make your campaign profitable, there are broader exclusions and bid adjustments you can make based on age, gender, device, location, parental status and ho…
97% of their income is through ads. Maps, Docs, email, Google Plus, Youtube, even Search - it all exists only to increase advertisement profits, and to get ever more minable data from the users. If the ads money ever dries up for whatever reason, the entire company goes belly up.