How about ads without surveillance? Sure, they are paying less, but how much? 2 times? 10 times? 50 times? Does this change if nobody is allowed to do surveill

How about ads without surveillance? Sure, they are paying less, but how much? 2 times? 10 times? 50 times? Does this change if nobody is allowed to do surveillance? I.e. if privacy-respecting ads are not competing with more intrusive ads, does the price change? I think discussing options is a waste of time if we don't have any data to base our decisions on.