According to a study conducted by researchers at Imperial College London, cryptocurrency has the potential to become a form of payment that is widely used for decades to come. In their research report entitled "Cryptocurrency: Overcoming Barriers to Trust and Adoption" Professor Imperial College London, William Knottenbelt, and Imperial College Business School Dr. Zeynup Gurguc, argue that cryptocurrency has so far acted as a store of value like a fiat currency.
10 years is a long time, it will be enough to make bitcoin as a mainstream currency in the future if bitcoin usage keep increasing from now.
Few years ago when bitcoin were created, there are only few peoples know about bitcoin and many didn't believe bitcoin value. But now, bitcoin value is very high and became a popular currency.