ICOs, just like any other investment opportunities, need to be researched properly. Not all ICOs are scams, some are great ideas backed by a reputable team. Just gotta do your homework.
The ones that win are those who get the discount prior to ICO and then liquidate during the ICO for a main currency like bitcoin/Etherium. Which is nothing more than the standard boiler room scam, updated for 21 century technology.