Can I ask then, why continue to use it for 10 years?

You can sell crappy products with above 90 percent margin. Though now we primarily use FB.

Why continue to use it?

The fraud really just steals from legit publishers.

If you’re an advertiser and the display market becomes 90% fraud, you just end up paying 1/10th the rate for 10x the traffic.

Legit publishers get 1/10th the revenue though.