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.
No, I think the demand for ICO is increasing because the IEO fee on the exchanges is getting more expensive and good projects but there is no capital required to implement ICO.
that's why recently ICO projects have been noticed by many investors. But the number is not significant, I still prefer STO.