> It has the economic size and stability but not the will right now.
The european union's GDP is a solid 50% behind the US (20 trillion vs 30 trillion). But more alarmingly the growth in the european union since the 2008 financial crisis has been totally anaemic: the growth doesn't even counter inflation and that growth only came at the cost of gigantic additional public debt. Meanwhile both the US and China's GDPs grew like mad.
I also dispute the stability of the EU: in many countries the people aren't happy at all and the far-right are winning elections everywhere. And it's only through tactics (like the center-right siding with the ultra far left in France to counter the far-right party who won the election) that parties that aren't the far-right are managing to prevent the far-right from reigning already.
For example in the European Parliament 36% of the 720 seats are for far-right parties. And that's after all the other parties colluding (including with the far left) to prevent the far right from having more seats.
And as people are more and more dissatisfied with the current situation in the EU, the far-right keep winning more and more voters (sounds familiar?).
> The Euro very well become a reserve currency in a multipolar world if Europeans decide they want to shoulder it.
The Euro is only 27 years old, is a badly conceived currency and may turn out to be one of the shortest lived currency ever. There's no way it's ready to take on the role of the USD. France's finances, the eurozone's 2nd biggest economy, are crumbling (gigantic public debt and insane public deficit) and may very well be overtaken by the International Monetary Fund (like it happened to Greece) soon.
Germany is trying very hard to ban its far-right AFD party from the elections for they know they could very well win. If I'm not mistaken the leader of the AFD said if they won, they're out of the EU. Think it cannot happen? UK left the EU already.
It's not just the EURO that may be the shortest-lived currency ever: the EU is actually in trouble.