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 thing is that most people now prefer to use cryptocurrencies as investments in a bid to make more money instead of as a currency that they were created for, that is why they coins are having such a hard time being used as currencies. it will get to a point where people will have no choice but to use them as currencies but until then the prices will stay down