No need to invest in ICO, just invest in several altcoins that have the potential to be 2x or 10x,
yes, like ethereum, Tron or Ripple, coins with large market cap make investors comfortable, so hold for a long term
As a safe alternative it is true as you say, we only need to invest in well-developed altcoins or top 10 altcoins.
However, even though investing in ICOs is very high risk, especially many ICOs are scams lately but if you can get a good and successful ICO ahead of the increase in bitcoin prices like now then the benefits you can get are much greater.