ICO causes more and more distrust - thanks to the scammers. At this point, companies that produce and sell tokens are more focused on the product. The product is being developed and improved. And all before the token sale.
Unfortunately it is so, more than 78% of ICOs are SCAMS. But this sphere is pretty young and somewhat reminds me about the Dot Com times, just take a look at the charts of Amazon or Microsoft and you'll understand how much potential projects from the top 10 have.