Isn't it happening already? I mean both are existing aren't they? Though there are controversies (as expected) with cryptocurrencies, this is a normal thing with something quite new. Many were skeptical when cryptocurrency was introduced. But of course, aren't we all when it comes to change? Skepticism only remains until proof of functionality and usage has been made along with education and research. But this process takes time. And crypto is going through that process. As you've mentioned, fiat's been around for hundreds of years. Crypto's been around for barely a decade. So I believe crypto should be given a fair amount of chance to prove itself.