I have overheard one investor complains of how he invested in 12 ICOS and 10 of them have already failed him and he was quite bitter toward cryptocurrency investments especially ICOs.He was advised to stay positive and hold the tokens for a long time so that when the market recovers, he could make up for his loses. So whiles others are harvesting big from their investments, others are not happy but I think it all has to do with the skills of the investor involved.