They try to filter out people faking ad views. Precisely so that you don’t get more money.

As an advertiser you usually don’t talk directly to the people offering ad space but at an ad distributor like Google. They usually have techniques to minimise fraud. And often they offer to only take money for ads that actually lead to measurable goals. Then you wouldn’t pay for views but for how often that goal was reached. Those ads are usually shown less often so they might be less attractive if your sales aren’t exclusively online.

The marketing boss at one company explained it like this: “We’re basically known by every potential customer in our field. We advertise often so that they don’t get the impression we’ve ceased to exist.” So for him targeted views were more important than immediate sales.