The global economy is nearly 80 trillion USD per year. Payments using any type of cryptocurrency as a medium of payment is a tiny fraction of this total.
What are some of the reasons preventing cryptocurrency from being more successful as a medium of payment?
the main trouble is that we still can't say whether crypto is forever. what if it will be demolished? what if the government won't like the idea of not controlling their money? the position of crytpo is fragile