Scam ICO can be in any platform, it doesn't matter if it is in ethereum or NEO, why ethereum has more is because it is widely use by many people to host their ICO, I believe when NEO gain much popularity like ethereum, it will be even worst because it is a free gas platform.
What are you talking about? NEO does not require permits, but it is very expensive to deploy a contract so any fishy ICO will try to avoid it.
It doesn't matter if it's more expensive, it will still attract scam ICO's only with bigger entry capital.