As the title already says. What are your promising ICOs (big investing, promising project etc.) that couldnt full fill their expectations ? Are maybe some of them still "living" and having a living community?
Why would they not be living? First ICOs started in like 2015. That is only 4 years ago. Most ICOs have nothing done beside the idea when were crowdfunding founds. So in less then 4 years they could do little. Yes there are some ICOs that had project going on before and ICO was just crowdfunding for additional founds. Those projects are further ahead. But judging ICOs right now is silly. Plenty of them will do very well. Of course plenty of them did nothing and some even did not even start doing nothing, but that should be first thing for anyone giving them founds to check it out and make sure is impossible to happen.
You would not hire a basketball player in your team that cant play ball. Same as you will not hire and pay in advance basketball player that will never actual show up. If you do such kind of things your team will by far be the least in the league.