I think, not every country has an ambition to become a world leader. For example, it's clear that Nordic countries prefer peaceful life with high quality of life and prefer to stay on their own while it's clear that the USA, China and probably Germany (and probably France with it) in the name of EU, wants to become a world leader. I would say that Russia definitely wants it but it has zero capability to achieve that goal, doesn't matter how much it wants, it has zero capability.

At the moment, it's almost impossible to make America give up on keeping it's currency as a dominant one. It's not training its NATO troops to make a show, there is a reason, there is a plan.

America makes it very hard or almost impossible for small countries to abandon USD. It has a huge influence in every country and has USAID programs all around the world. If you are not a lazy person and work hard, quality of life in America is great. People in poor countries work hard but rarely earn. So, America tells people of these countries: We are here to help you, to develop your countries, to improve your quality of life. If the government of any of these countries abandons USD, then America will tell their people that their government is corrupt, is doing bad for them, for their children, etc. One may laugh but this is reality, they gain influence in poor countries. Also, one thing that I noticed during my travel in some poor countries is that these people trust USD, Euro and GBP more than their own currencies. I've even heard from some taxi drivers that they save their savings in USD because their local currency has high inflation, etc. People even calculate the value of their apartments, cars and other things in USD instead of national currency.

America has a great relationship with Europe too, which is a huge economy and very developed union. America has great relationship with Canada, Australia, New Zealand, Japan, South Korea. These countries aren't going to abandon USD because things are going well for them with this relationship. The Chinese-USA economy is pretty linked too. So, now think yourself, is it easy to abandon USD? Countries where USA has placed its troops and nuclear weapons, are really gonna abandon USD? If they abandon it, what will be an alternative? It won't be crypto, at least for now! But this will happen, it's only a matter of time, it may be a smooth process, not an instant one because in case it's instant, I already said, America has roots very deep, there is no way they will let this happen instantly. And long-term, it will happen because nothing lasts forever.