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?
This is a good thread.
For ICO 2018, investors are smarter (atleast that's what I hope). A lot of ICO's now have to prove that their project is worth to invest into, before we only see promises and shady teams. Things are more transparent now.