That's where it gets really tricky... if the scammer's motivation is to profit from the surrounding infrastructure rather than from running the actual scam it can become super hard monitor and effectively do much about.

Reminds me of days of old (back when we wrote and it was printed on paper!) when I wrote for the "Income Opportunity" press... some of the most successful "dodgy programs" really weren't all that dodgy... but the founders' independent printing company that created all the sales brochures and literature was making millions while the programs themselves were under investigation for being a scam.