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Google raising price of YouTube Premium to $13.99 per month
(9to5google.com)
This is a most excellent place for technology news and articles.
Dude, they ARE the advertiser. That's Google's main business. They have no incentive to export ANY of your account data to 3rd parties. Business tell them what groups of people to advertise to, and their systems handle the rest. They're open about how it all works.