You don't write to your A. G. to get your money back. (You won't.) You do as an act of civic service.
These people will defraud again. Their investors will back people who will defraud again. Putting people in jail doesn't get anyone's money back. But it deters the next fraud.
Write the letter, send the evidence, write off the loss and then move on.
It was a mistake I made, so I’m just hoping to help people realize that things get so much easier when you stop caring.
Also: are you suggesting they should look at themselves as a victim? They might be in one sense, but in other senses they might not be.