Another famous quotation about Internet from the inventor of Ethernet, Robert Metcalfein December 1995

"I predict the Internet will soon go spectacularly supernova and in 1996 catastrophically collapse."

Blockchain is the technology of the future similar to Internet of 1990s and people are yet to grasp its impact on the economy. In decades, there will giants like Google, FB, Amazon that worth 100s of billion dollar market cap.