It is true that there are lots of potential scam ICO's that pops up every day which results to an increasing number of investors getting scammed, but I don't think that ICO regulation will work, it will just defeat the purpose of decentralization. The only thing we can do is to educate ourselves on how these ICO's really works to reduce the increasing number of scam cases. If this researching skill be mastered there is no need for the regulation.