Really i don't think is ok to invest again on ICO, this is just my opinion and anyone do what they want with their money, but some IEOs can bring a profit in my opinion even if this can take more time.
Am glad to see someone who shares my thought. Investing in ICOs involves a lot of risk. Even the so much hyped IEO is no different cos it's not a guarantee a project will be successful after the IEO.