I think no ico scammer has been brought to justice uptil now but many cointries are busy in setting rules and regulations where only legit ones will be allowed to raise funds and the scammers will be caught and punished.
I think when you could identify who the people behind the scams.
and to think where country are there origins.
you could file a case against them on that county.
and i guess its up to the country's law or government on how would they take action
but im not so sure. im basing some of things that i have seen on tv.