The majority of coins that are live on coinmarketcap would disappear in 5 years, because they are suffering from lack of money, strategy and competent management. Besides, 70 percent of coins are not backed by a working product.
Lack of money is an old reason to leave from all of the responsibility of developers to the investors. This already happened since the ico trend has begun in the past.
Remember about the latest audit from some trusted parties and more than 80% of ICOs are scam icos or these icos have no competences to create products.
These scam icos have been selling the idea only even that's a nonsense idea.
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Lack of funds is actually a problem (Funds mismanagement is the root) . Not all those ICOs peaking in 2017 exit-scammed. Most just didn't manage their funds right. They got caught up in the whole ico-frenzy and used up funds raised to the extent that there's no money to psy the actual platform developers (I'm an aspiring developer so I know this and if developers aren't paid, they leave) and then everything falls apart. This is a major reason why most startups failed - Crypto funded (ICO) or traditional businesses/startups.
And I think IEO startups are beginning to follow same part and It's not helping because there are legit/serious projects that can bring new stuffs to the table but no way to raise funds as the ico bubble has bursted and IEO trend seems to be coming to an end.