It's actually a bit more complicated.
AdSense indeed used to work through ratios of views and clicks, but Google (and all other ad networks) have been tinkering with it to benefit them even more.
Today, it's about conversion, and conversion as a KPI is not well defined. Clicking into an as might simply not be enough to make it cost more.
gravitywell@sh.itjust.works 4 days ago
Did you know there is a browser extension that does this for you while also blocking ads from view?