You missed 2019, cause by 2020 there are only 50 coins in the market those are the projects with use cases and has a real product.
agreed totally .
As per past record many coins are disappeared from market which were listed on coinmarketcap before 4 years , reason is simple those coins could not delivery something valuable and hype without product cant sustain longer .
same way you will see many coins will be worth 0 after 2-3 years . however selection of neo , eos , man , is still much better . I dont think these coins will be dead in future .