The founder of ETHEREUM said that over 90% of ICOs are scams. By participating in an ICO, you give your money to a project that probably will never happen. Every day a new ICO comes out ... but what surprises me is that many people invest their savings in these very high risk projects..
I think that at least 2-3 more years investments in ICO or work for ICO during the advertising campaign will be a profitable business and will bring considerable profits. Another question is that it's necessary to conduct a careful analysis of all projects and approximately only 10% of them can be profitable.