There is ALWAYS a chance. It's crypto world.
Devs should do their job, but the business development team behind them has the responsibility to take this project from CODE to BUSINESS.
A nice GitHub repository full of code has a limited value...

That is why, besides the dev's qualities (if you can assess them), you always have to check the level of the business dev team (and the advisory board) in every project (ICO). LinkedIn is your friend.
Example: https://www.linkedin.com/company-beta/7595700/
(Note: i have mixed feelings about the team... they look great, but shady at the same time)