Earlier quoted context omitted.
Fraud. The dozens of domains and tons of javascript are all there as part of an effort to establish that the ad has been served to a human who might concievably be a customer for the product, and not a robot or some sort of third world ad-viewing farm.
That's true for click campaigns but what about view campaigns? Couldn't Samsung, now releasing their new phone, buy a website's entire ad space for a month or two, let's say techcrunch, and tell them to serve their new phone's ad themselves? Samsung is in for the eyeballs just like when they buy those huge outdoor ads, but even better, no intermediaries. The publisher would even optimize the HTML5 ads for loading and…
If Samsung's marketing people are in Korea, I'll show all Asian IP addresses their ad, and then show some other ad (or ads) to the rest of the world.
Of course, Samsung may notice the low volume, so a better scheme is to also load their ad elsewhere, but placed on the page so it's not visible.
If you look at the Javascript that gets served with the ads, there is generally a hunk of logic that tries to confirm the ad is genuinely visible, to try to deal with that last bit.