I don’t think we can dictate each government about what is our opinion here. We tolerated ICO and we don’t do much about them, if in the first place we should have made the same move before when ICO scamming is still starting. But I know one thing we can do for now. Report every scammers and don’t invest. Be matured enough to know them. Andd when ICO will changed its image in the long run maybe they will lift the banned.
Although we can't dictate each government but we can influence them. If they see the good things an ICO can do. They can probably remove the ban and thinking about regulating it. One good example is china, they saw there people earning through them thats why they simply regulate it instead of banning it.
