I think more than half of them fail, and I'm almost sure that this is mainly due to the product itself!
When the market conditions are red until now it is certainly difficult to succeed even though it is supported by good products, the biggest factor that makes market red is too much ico so that the competition becomes very tight.
Difficult for people who are into short term profit, but it's not for those who have the right patience.
We know the current situation, we have to understand it and make an appropriate action, ICO is a good way to invest in start up project
and it's understood that they are new in the market, and actually in the past there are coins that increases a lot but that's all hype
because if you will study the project well, it's overvalued and market sentiment really affects the price and that's what is happening now.