Of course, it will defeat the purpose of cryptocurrency/blockchain if the government will have a total control of the system but if this system has to go mainstream then they will not have a choice but to get involved...

Government involvement(not just issuing warnings) means that it can be like a creation of a organization/body to certify(like an accreditation) any ICO's that are being offered in the public....Although we understand that this does not mean a garuanteed success of the ICOs.... ONe way or another this system/blockchain/cryptocurrency need to be tamed, if it has to become our future.