Right. You can only remove Company B-E's ads by depleting their daily budgets. The service Company A paid for does not include purchasing Company B-E's products or services, just knocking out their ads. Those advertisers will see a negative ROI from their Google ads and eventually cancel them. Now Google has lost four customers and the one that remains no longer has to compete for ad space. Google loses all of Company B-E's ad spend, and most of Company A's ad spend as it can drastically lower its bids. They are not "still being paid", which is why they are heavily incentivized to identify this fraud and ignore or refund for the clicks that company is generating.