I am puzzled here. Why is the FBI expecting the free market to solve the problem created by the free market? Are these scams somehow legal? If the scam is illegal, and search engines are promoting the scams at the top of search rankings, doesn't that make the search engine an accomplice in the scam?
If I invited crack dealers to deal out of my house for a small cut of the proceeds, I'm pretty sure I go to jail when they're caught. That's essentially what search engines are doing here.