I think ICO started to increase day after day and people started to trust it,The future will goes to ICO, maybe because the low price or the new features which it provides.
In my opinion for ICO not many people like to following. Now a lot of people choose IEO where the duration of the campaign is not too long, especially since there is a plan to plan a large exchange. I'm sure the campaign participants prefer a short time and already have a market.