The number of potential projects failed because the lack of investors was a natural thing. This is something reasonable because investor confidence in the ICO has diminished. The many false ICO or ICO frauds make these investors afraid and choose not to invest temporarily. In addition, the very volatile cryptocurrency market conditions make profits from investments not as large as normal crypto currency conditions. These investors choose to save their money temporarily instead of being used to invest because they choose safe risk management so they don't suffer losses.