JH,
In my entry I start off with a brief observation about the dichotomy of energy and information; That energy manifests information, while information defines energy and while energy is inherently dynamic, information is necessarily static, as well as the creation of new information requires the dissolution of old information. As I pointed out, information is a function of distinction and limitation, so anything so informed is subject to context. What this means is there is no ideal form. What might be suitable in one situation will not be suitable for all situations. So while a national currency might have advantages over local currencies in some conditions and for some people and businesses, the opposite would also be true for other situations and what you have is a fluctuating state, where those in the middle will switch back and forth depending on their own needs. This creates a natural flux and wave action.
Now some forms, such as the dollar as a global currency, could well be advantageous for lots of people for a long time, but like all waves, the bigger they get, the harder they crash. Right now we have exposed ourselves as having limited influence on the Eurasian continent and there are an increasing number of countries, resident to that landmass, who are considering other mediums of exchange, which might make significant numbers of dollar units superfluous. Which means they could start returning home in bulk.
So yes, nature does pick winners, but never forever and as the old Greek saying goes, "Those whom the gods wish to destroy, first they make lucky."
People can create small waves, but they can only ride the big ones. What we want to do here is create a small wave that might grow bigger, after some of the current big ones crash.
Regards,
John M