Special arrangements for ICO have not been done because crypto itself is decentralized, but now it has started to improve with the existence of KYC on the ICO and also new exchanges which will reduce fraud and other scams.
this is complicated because crypto adheres to a decentralized system so that no one can regulate it even the government, therefore it will be very difficult to make regulations that make all ICOs want to do regulations because there is no highest institution to obey, and if the institution is made so that every ICO want to obey, then decentralization will disappear