ICOs are over-rated anyway, its just get-rich-quick schemes, the bottom will fall out of it with or without SEC approval. Of course the ruling has little weight if the 'company' is offshore from the USA, but expect other regulators to follow suit.

I dont know if the exchange you referred to was Lykke, but they have been careful to not sell to the US until they get regulated, which in my eyes tells me that have some kind of idea what they are doing.