Google doesn't have to send your data to a third party to get advertising revenue. The advertiser creates and advertisement and passes it to Google with a sele

Google doesn't have to send your data to a third party to get advertising revenue. The advertiser creates and advertisement and passes it to Google with a selector, "We want to show this advertisement to men over the age of 35 in Milwaukee" and a price/click. When someone who fits the selector arrives, the advertisement enters into Google's auction. If it wins the auction, it's rendered to the customer. Google doesn't say "Here's the list of our customers, and who they are, let me know who you want to send ads to". https://support.google.com/google-ads/answer/1704368?hl=en https://support.google.com/google-ads/answer/1704368?hl=en