I think the balance will come in a few generations. Now, we are the generation that is accustomed to fiat currency. Our descendants will use mostly cryptocurrencies. That's when we all will not be active market participants (someone will die, someone will be old), then the financial system will change.
right, it's still a long time for cryptocurrency to replace fiat currency. i don't think right now, given the many obstacles that must be faced. of course for short and medium term we expect many stores that facilitate payment using crypto