The btc and other crypto dont need comparsion with fiat currencies.
For example If saudis and OPEC Will sell oil and accept btc or other crypto then it's end of the dollar.
But the point is that currency in order to succeed need to have commodities relation.
The bitcoin itself is commoditie so btc cant be currency...the oil is commoditie and gold...so u cant buy food with oil or gold neither with btc yes you can but the rule is that commoditie is commoditie and currencies are currencies.
So you need currency what are the currencies?
Currencies Are now If we talking about crypto then stablecoins.
It's very real that world commodities gold oil and food Will start accepting stablecoins for payments.
The crude oil is biggest commoditie in the world with biggest market Cap so If any currency Will be dominant in OIL trade then this currency will be the king.
And likely USDT or USDC Will be used for oil trading since other country Stablecoins Are not so well developed then USD Stablecoins are developed.
But only one thing is missing.... there Are no proper network of ATM machines so people can exchange Stablecoins instantly to cash like people in brazil allready can Do it they are lucky they don't need banks it's proven that unbanked people can use USD stablecoins.
Most likely the old USD will be replaced by USDT or USDC with new digital currency the digital dollar and new cash bills Will be invented becouse in order to have legit currency widely accepted the paper bills are required aswell.
So now the brazil showing the light to other world... Slowly world start following to brazil to get Same things done and once this thing is done nobody really don't need Banks anymore, brazil can Do it then we other countries can Do it aswell.
The future is real we probably have USDT ,USDC paper versions aswell as digital ones.
Good times ahead things gona be better much better more financial freedom and more ways to earn good money
I know you're well meaning and all but from an outside perspective this is what it's going to sound like:
"Hey, I want to buy your oil, a commodity that was proven vital to sustain human life and society for years since the Industrial Revolution, we won't use your regular dirty Fiat, no we will use this coin with 10+ years of market tenure, and held by a few million people in the world, it's also volatile that it could zero out in a matter of days, but hey don't worry cause it's way valuable now and it could pump in value in the future!"
You see the logic? It's not gonna sit well with them, you might even get a boot in the face if you tell this to big business and oil tycoons.
Bitcoin is great and all, but it has yet to prove itself in the external market. And with the recent crackdowns on its usage from different countries across the globe, this just makes it harder for bitcoin to earn a seat in the top-tier echelons of commodities. Until we solve that issue, bitcoin and other cryptocurrencies as you put it, will not be accepted for any other purchase, especially for large-scale purchase of stores of value and commodities like oil, gold, and others.
