I fully agree that without a clear regulation we are waiting for only chaos and manipulation in the market. In such circumstances, it is impossible to predict anything and understand where the market is moving.It can artificially collapse at any time!
You are right, without regulation, blockchain industry is filled with frauds, scams. So govr should be involved and clean out the criminal acts to build a righteous atmosphere. But blockchain is decentralized, operating on citizens' consensus. So in terms of the core of blockchain, govr should be meaningless cuz the supervision power is made of all citizens. So, it's contradictory when the govr take control of the industry. But as a new industry beaten by the flawed mechanisms, it does need a relative righteous power that owns rather trusts to take control for a while until it's on the right track.