If I am not mistaken, by the end of 2018 the ICO project has been abandoned by many parties for various reasons that have emerged and turned to the IEO.
Are you saying that IEO replace ICO? actually, IEO was not differ to ICO, they are both no guarantee to say that the token has a potential or not?
Just all I can say is that in every form of investment in the project has a risk involved, now since IEO was too trending so far it doesn't mean ico is not useful anymore, of course not! they are both still give opportunity to anyone here in the crypto world.