ICOs have been existing even when the price of bitcoin was not as high as $1000. So for that reason, some ICOs will still succeed and most will rail.
The only set of ICOs that will succeed will be those with genuine team, good products and long term prospects.
even though it has gotten it all but the challenge of ico now is how to attract investors. whereas now most investors are more interested in selling IEOs that provide more security for their money, because there is a guarantee of the name of the exchange.