I have known Bitcoin for a while, and I think I understand the value and significance of Bitcoin. But from an economic point of view, I would like to know what role Bitcoin will play in the face of superpowers like China and the United States in the future.
You're getting it all wrong mate, you're talking about countries/government, Bitcoin is neither of that, I mean it doesn't even have a central organization/body/leader to even start with, it's free, and you, that's if you're a user and every other person who uses or wishes to use Bitcoin in the future controls their funds themselves, in a few words, we are basically "our own bank". On the centralized economic front, you should rather be asking what the benefits of CBDC's will be to these nations that are obviously clamoring for it and not Bitcoin.
El Salvador has adopted Bitcoin as its country's legal tender. Panama, Colombia and Uruguay also seem to be interested in Bitcoin. Indeed, for some countries that have been unable to control their own economic development through macro-control, Bitcoin gives them another choice.
This isn't true, notwithstanding any economic condition, most governments wouldn't even consider Bitcoin an option, how can they even? When they can't control it, or print and distribute it as they seem fit, El Salvador may have done something good, but look at China, the U.K, Nigeria etc, they have all come up with one sanction or the other; I believe there will be more and more regulations going forward, the government is obsessed with control, and that is what Bitcoin doesn't give to them, hence they mete out hostility towards it.
If Bitcoin is used as a currency for daily use, it will undoubtedly destroy the status of the RMB or the US dollar. If Bitcoin is used as a store of value similar to gold, due to the decentralization of Bitcoin, it is difficult to hoard a large amount of Bitcoin together. I am not a student of economics, and Bitcoin seems to be of little use to the current economic system.
The thing is Bitcoin can't destroy any fiat currency or stop it's use, Bitcoin can't even be the only currency in use, it'd either be used with fiat or not used at all, cause if one is to give way in the society, it'll be Bitcoin, and then again you can have no trouble holding as many Bitcoins as you can afford, like I said earlier Bitcoin gives it's user the liberty of freedom and control as regards their funds, it's also a hedge to fiat inflation and devaluation, it of course plays an important financial role for individuals in this financial system.