What would be the incentive for an advertiser to spend money on bots to juice the click-through rate of their ads? More ad-clicks mean more money spent on ad ne

What would be the incentive for an advertiser to spend money on bots to juice the click-through rate of their ads? More ad-clicks mean more money spent on ad networks, and bots are notoriously stingy customers, all the more so if they are your own.