I don't think this series of events signals the end of ICOs. Regulation is inevitable. The strongest ICOs will still find a way to succeed, with or without government regulation.
I agree, It's well known that any new concept eventually gets regulated. This could be a good thing as it will raise the bar of ICO's. Also I know that China and the US are huge markets, but there is still a huge market for it in countries where it isn't regulated (just yet)