I think that this prediction might come true. Cryptocurrency is the future to the digital transaction system. Sooner or later, every country in the world will feel the need of cryptocurrency. The coinbase chief executive, Brian Armstrong, predicted that in next 5 years the cryptocurrency user are increase in number by 1 billion.
I definitely agree with that, If a billion people get involved in trading in the upcoming 5 years we all will be millionaires with our current portfolio assuming everyone is holding at least $3000 worth of crypto.