nowadays, ICO's are overwhelming and more than a handful. there are some success stories like ETH, NEO and the likes, but what you think are the reasons that despite a good team, the ICO did not flourish? some of them had reached the Caps, earlier than expected but was not able to move forward.
a. lack of end support?
b. funding?
c. unclear and not able to meet their goals as per roadmap?
Pretty much C.
ICOs are a gamble and no matter how good it may seem, at the end of the day it'll be up to the community to hype up the coin that they have invested in. For the investor, the product is what makes it able to be hyped.
If they cannot meet their goals from their roadmap and whitepaper even though they may receive many rounds of excellent funding, they probably won't survive the first stages of ICO introduction.