In 1983, the young Bill Gates and Steve Jobs embark on their illustrious careers. Nobody, and I'll repeat NOBODY, could have predicted the massive amounts that would be created in the next 30 years. Here is a funny video of them.
In 1994, the internet and email were becoming part of everyone's life for the first time, companies like Netscape AOL and Lycos were the titans. It would be reasonable to suggest these companies would take over the world.
In 2004, Google's IPO was considered one of the most expensive in history. I vividly remember many of my co workers steering their clients away from this "extremely expensive stock". Once again, no one at the time could predict what the future would hold for this great new industry.
http://www.sfgate.com/business/networth/article/Is-Google-s-IPO-really-worth-it-Internet-2738475.php
So please, in 2017 when you read or watch something from Forbes, or the Wall street journal, or CNBC know that most of these people do not understand the basic technology or the future potential it has. They are simply people reporting the news of the day.
It is most likely the case that the biggest coins/companies in this realm haven't even been thought of yet.