In 2017, keen investors saw the bullish market and invested in any ICO in sight.
Fast forward to 2018, and most of these ICOs are dead, dying, or a scam.

So, what is the difference beetween ICO 2017 and ICO 2018?
in my opinion mate is the price which is now more inflated than before
think about coin in 2017 with 100 mil the price was 1 cent which give an opportunity for 10x gain now the same supply the price at preico almost 10 cents or more so less opportunity for x doubling