How profitable is to invest in ICO? It all seems like gambling, because it depends on what kind of team developers they have, it is as similar to trading you could well profit from but you can also lose money, and for this already exist exchange office and can be accessed at any moment
In short terms ICOs are profitable, like 2x or 3x but in long terms it's risky; 'the coin' can go to even 10x or you can lose your profit or even most of your money.