Many ico have die and any investor lost their money with ICO project investment, many time I got ico have scam with thousand reason, some ico scam because lower interesting or investor and many ico scam by fake and untrusted of ico owner.
Because many ICOs are scam, making fears that their hard work is not paid. The reasons are various, but the end is fraud. There is statistical data from Tokentops which states that most ICOs have become SCAMs and confirmed failed. The reason that often occurs is that the ICO offers the lure of ROI (Return of Investment) with a level that is too high.