I agree with you that all countries have the opportunity to make the regulation prohibit ICO for the same reason as the regulation made by China unless there is an ICO project in a country requesting the government's approval to make ICO and part of the profits left to the government I do not think the government will interfere about ico again.
But if government interferes in every altcoin, won't it make every currency centralised? Isn't it what crypto community is trying to avoid?