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?
I cant really see a difference between the two. Scam are already present in the 2017 and I think that was the year scam really started to show in mass. 2018 scam and failures are just continuation of the previous years events.