I do not think that 50% of failed ICOs is too much. In any business, percentage of loss-making campaigns is high. If we take the sphere of startups, only one project out of ten survives there. So, it is not so bad in the field of ICO as it is given in media
I do not share your sentiment on this. 50 percentage failure rate to me is not really acceptable to me. This show the level at which the developers of thes ICO failed to come out with a sellable idea. Although i know it is not quite easy to set up an ICO project but I think it is better to take time to come out with a great idea than rushing into what they are not sure of.