Deceiving your users

I constantly read messages about missing tokens for ads.
Now imagine how many of these users. There are approximately 50 million of them. Of these, 40 million use advertising. Let them try 5BAT each time.
And suppose 30% of browsers will block or some other failure will happen. Where will these tokens go? Of course, Brave. And this is at least $ 5 million.
After all, I doubt that they will be returned to the advertiser’s balance)
Not a bad scam.