Advertisers quite literally pay for clicks. That was part of how Google disrupted the market back in the day; most other advertising networks were selling "impressions", but Google was so confident in the relevance of their ads that you got impressions for free and only paid when a customer actually clicked on it.
The click is worth paying for, because it is a signal that the user has seen the ad, thought about the ad, and is interested in the ad. Advertising gold.
Obviously Google have many products (they bought Doubleclick an "impressions" company), and there are analytics value-ads and all sorts of things. But the core of their business is still pay-per-click advertising.
Your idea that advertisers are buying raw data is a misunderstanding.
Advertisers quite literally pay for clicks. That was part of how Google disrupted the market back in the day; most other advertising networks were selling "impressions", but Google was so confident in the relevance of their ads that you got impressions for free and only paid when a customer actually clicked on it.
The click is worth paying for, because it is a signal that the user has seen the ad, thought about the ad, and is interested in the ad. Advertising gold.
Obviously Google have many products (they bought Doubleclick an "impressions" company), and there are analytics value-ads and all sorts of things. But the core of their business is still pay-per-click advertising.
Your idea that advertisers are buying raw data is a misunderstanding.