Ad enters an exchange, that ad likely touches Google services at least once, perhaps twice.
The ad enters a Google ad server for publishers.
The ad is verified with Google ad metrics.
The ad is verified again be Google analytics.
This is a monopoly and that's a huge problem.
Yes.
Is that number likely in the billions?
Yes.
Will we ever really know what that number is?
No.
That's a problem.
As a nation, we have real incentives to fix this problem.
Yes, publishers have fault in this, but that doesn't mean they should be doomed.