That's because there are many investors who no longer believe in the development of ICO and crypto currency, they only want fast profits, with many ICO scams, that certainly makes investors rethink to become long-term holders.
This is a huge problem of the present time, because all these projects, which today are deceiving people, have really learned to work very seriously on deception and to make quality websites for this. It is a pity that today there is no government for this.