How long until Google / Meta / whomever just starts having faster response times and higher resolution content for people who have clicked on an add in the past N minutes?
People who don't click on ads either (1) self-select away from the platform (or at least reduce their time on the platform), (2) begin to engage in quasi click-fraud, or else (3) consume fewer of the service's resources.
It seems like a pretty simple way to improve the ratio of consumed resources to ad revenue.