Without ICOs, there would be no Ethereum. Without Ethereum, the crypto market wouldn't have grown so fast. It's attracting a lot of capital right now.
You're right, ICO are ethereum provider. Anyway, we can benefit them also and still there's a big rewards in joining their campaign.
And some ICOs are successfully launch, but some of them are vanished in the middle of their campaign(scam).
We cannot really do much about this, can we? It is normal for anything to have advantage as well as disadvantage. So I guess we will just have to stick with what we have presently since the innovation behind ethereum has really helped to spring up some quality coins as well and also helped generate a lot for the crypto community as a whole.