There's an entire field of math phds working on figuring out accidental and malicious clicks. Fun fact, your touch screen (and even your keyboard) uses a rudim

There's an entire field of math phds working on figuring out accidental and malicious clicks. Fun fact, your touch screen (and even your keyboard) uses a rudimentary version of such algorithm to figure out whether you tapped/clicked once or multiple times, or whether it was an electrical spike. And unlike what you're saying, not every click on the ad leads to payout. Complex systems run behind the scene to make sure it is actually valid or not.