I believe that the IEO topic is becoming irrelevant - at first, yes, the projects gave great profit, but if you look at the latest projects - it is very hard to get and there is almost no profit (even losses) - people will soon stop participating. Better to return the ICO format!
I do not think people around are foolish enough to return to the ICO stuff. They have lost enough money and gained enough wisdom to stay away from ICO. The success of a project in IEO depends on one thing and that is the project itself. If the project is good, it will gain value and will give back returns. In addition, do not go for IEOs on the weak exchanges and target Binance.