I think reacting to scammy ads by banning all of them is an overreaction. There are many useful products and services I would've never found out about without a

I think reacting to scammy ads by banning all of them is an overreaction. There are many useful products and services I would've never found out about without ads. How about simply making all ad networks responsible for the content of the ads they serve? You lost your life's savings to a Ponzi scam advertised on Facebook? Sue Facebook for damages. There should be laws in place that allow it. This would fix the problem instantly.