Seriously, I have spent some time in my career in the online advertising world. In the video ad world, we have actually done simple fraud test (stupid bots clicking on the same pixel all the f'ing time is a clear give-away). A good 50% or more of video ad views are fraudulent. Since video ads are paid on CPM basis, advertisers totally get f'ed. Ad agencies who manages the spend don't care bc they take a % of spend. So it's all a giant collusion.