it's kind of a gamble, Sometimes you loose and sometimes you win, this investment is risky. now There are many ICO's and most dependent when they complete the sale. Sometimes people just buy and sell without researching what will happen next, not taking into account the bad things will happen.
Bro, if you spend much time to learn everything about upcoming ICOs, when you read their whitepapers, and get the information about the team, it will be not gambling.