If it is indeed impossible to vet all the traffic passing through your networks, then perhaps your networks' existence is itself the issue. Maybe it is indeed not possible to vet 30 billion ads, just like it's difficult for Facebook to moderate all 3 billion users.
Perhaps the actual problem then are these monolith platforms that have done such a good job "eating the world" that they can no longer properly function.
Perhaps the actual problem then are these monolith platforms that have done such a good job "eating the world" that they can no longer properly function.