It were many successful ICO`s in last year , you just only have to learn to choose them righ , and that`s all. Of course investing in ICO have more risks , than trading altcoins , but can give more profit in a long term.
However there were many scam and unsuccessful projects. Investors are becoming more focused and interest in ICO is a litle fading. I think in the future we should wait for gradual changes of all ICO's projects