How about an ad company that doesn't track you? An ad company that was based on (as in, its mission statement) anonymous data or client-side-session-level track

How about an ad company that doesn't track you? An ad company that was based on (as in, its mission statement) anonymous data or client-side-session-level tracking? The "problem" would be that current ads are SO tailored that they have a baseline click-through rate that'd be higher than one based solely on the content of the website. To solve that problem, how about client-side ad picker? (e.g. I download a score of ads from "nottrackingyouAdCompany.com" and a client-side JS solution chooses what to show, meaning my privacy is only "broken" on my own PC.)