It's like having more police because some people got robbed. The only way to prevent scams is to make people realize nothing good comes out of it, with the force of karma at role.
Well when that day comes, the world will be a different place. Until then, we need to be our own regulation.
I am so surprised how many people I thought might be trust-worthy turned out to be scamming. It is really amazing. My short-list is really short at this point. I am honestly holding off launching my new business just because I don't want people to think I am trying to come in and take advantage of this bad situations.