ICO will be in 2018 only grow. It's a young market. And even 5 years I think will continue to grow strongly. Of course with this growth will increase the number of fraudulent projects. But high-tech projects will be many.
Of couse. ICO will be more in the future. Soon, mechanisms for regulation will be invented, in addition, there will be a great literacy of investors. On this we have the means to fight scum - ICO.
Now there are difficulties - they will be some time, but everything will be fine.