It seems that there are no formal legal and industry regulations in ICO, so it is not necessary to worry about the legal issues at the beginning of an ICO, at least in my country.
In some country, there is, such as USA. Well, to say, creating an ICO do really needs a regulation to secure its reliability at the same time, limit the unwanted ICO to enter the market. Well it is just like a capstone that every team should strive to pass in order to compete in the market. Not allowing some worthless projects to overtake the good ones.