Also, correct me if I'm wrong, but this would make it virtually impossible for the ad provider to reliably measure how often their ads are viewed, forcing them

Also, correct me if I'm wrong, but this would make it virtually impossible for the ad provider to reliably measure how often their ads are viewed, forcing them to consider only clicks in their business model. This may be a pro or a con, I'm not sure. Would optimising for ad-clicks instead of ad-views encourage more valuable and interesting ads, that one would actually want to know more about? Or would it encourage (literal) big mouse clickbait at the expense of understated, informative, Google Analytics-style text ads?