Although there is lesser and lesser successful ICO's, why should we not believe in them, if from an investor point of view ICO's determine the "price" of the company through the supply and demand and investors must do their due diligence of researching which is a good one and which is a bad one before dumping money into the ICO. In the long run as investors may know which ICO is a good choice for them to dump money into and not anyhow dump their money.