As bitcoin has already reached the $8000 level and needs another increase for $8000 to reach a 100% winning percentage, some potentially lucrative and well planned altcoins definetely give you the opportunity to reach a 1000% winning percentage and more as the price needs only to increase for less than $100. Compare this with bitcoin and you know what you have to do.
The potential to make great profits with icos is there, but most of those projects are nothing but scams that is why despite the huge gains you can get many people prefer to play it safe and avoid them since they do not want to lose their bitcoin especially now that is moving like crazy.