I hope you can understand my bad grammar and bad english
When Bitcoin price idump, its difficult to get profit in ICO and some of ICO is fail.
This is reason why ICO isn't recommended to earning.
1. Low ProfitMost of ICO when their token listed in Market/Exchange, that price is always under ICO price. There are 2 ways to escape.
Sell with low price and small loss or
Hold and wait their price pump.2. Wasting TimeEvery ICO have time to open their token sale. They will close their token sale if hit their target. Some of token sale is take up 30,45 or 90 days. Some of ICO will not stoo their token sale if not hit target. After recieved tokens, they need to listing in exchange so, you must wait again. Better if they not lock that token long time.
3. Most of ICO are scamIts difficult to see good and real ICO. You can't predict what ICO will giving huge profit and success. Not all success ICO is trusted, they can scam too.
4. Most of ICO need KYCSome ICO is need KYC to make their security save from buyers. But, giving your identity its dangerous and not all ICO will keep save your Identity safe.
That's only my reason why i didn't trust some ICO again.
In some part i should be agree with this, but for point 2, i think that is not so much of a draw back of the ICO, people doing an ICO is to make an investment, so they won't ask for some quick profit, they prefer a long term profit, not just like when we done a regular transaction where we are looking a profit directly when selling some goods.