Recent news of the imminent closer of many Chinese exchanges is the direct result of them dealing in ICOs, I've been shocked for the longest time other countries have done so, allowing ICO's to fly under regulators radar, however its only just a matter of time.
Because ICOs are really getting dirty. A sort of regulation has to be employed to try sorting out ICOs offered in public. Look at how many ICOs end up as mere scams after millions and millions of dollars worth of investments have been carted away. This has to stop of course, one day soon.