Why don’t the dating sites do more?

This subject comes from a recent discussion I had.  Here’s the question.  Why aren’t the dating sites shouting about the scammers?  Let’s create a hypothetical situation here.  50% of the sites openly warn people about scammers there.  How many people would go “Scammers?!  No way, I’m off elsewhere”?  Now, the sites that talk about the scammers may have a much lower percentage of scammers than the ones that don’t, but people will feel safer on the ones not mentioning them, creating an uneven playing field.   In my opinion, that’s whay they’re not doing it.  If it’s  going to work, EVERY dating site must stand up and make the same announcement.  Will that ever happen?  I’m not holding my breath.  We need all the sites to agree to it, and I don’t see that happening for a long time yet.