Sadly, no government can punish these fraudsters because the cryptocurrency market is a global market and is not subject to the laws of any single country!
Fraud is a crime, and therefore states can unite in the fight against this global evil. For this there is Interpol, orders in the framework of international agreements, and work through diplomatic channels, if there are no such agreements. However, it would be better if states set up an ICO regulatory authority and checked the ICO teams for possible fraud.