I agree that bitcoin or other kind of cryptocurrency should be regulated. Regulation doesn't mean that we have to give up our freedom, but instead, rules protect us from scam stuff like that.
Who would regulate, country? companies? and will the majority of investors comply with the regulation that will be laid out, there should be a consensus among investors if they agree for the regulation, it might become a new source of corruption, we have seen what happen to rating sites, but honestly I would like to make a regulation in place a kind of regulation that is free from corruption, and every bounty hunters can comply and meet investor's needs.