Investing on the ICOs is really good idea but don't expect your token value to go to the moon because most of the token will lose its value when it listed on exchanges,so if you can find which token can ability to have expensive price in the future then it is good idea but for me investing on ICO is good only for short term investments. so Its very less likely to happen in my opinion, because bitcoin is the first cryptocurrency and it is the main source to trade into other coin. The presence of bitcoin is very strong.