It could work only if advertiser pays per click instead of per show. Is pay-per-click the only option in Google?
There also is clickbait.
There also is clickbait.
Search Ads are pay-per-click (or conversion now? Not sure)
All others are pay-per-impression.
conversions are what the advertiser really cares about, but they're hard for Google to be sure about. And what if you see the ad today but buy it next week in the store?