I would argue that not only is it not the most likely outcome, but that it's practically impossible. When the colonies united they all spoke the same language and shared the same culture as the descendants of recent British colonists. Furthermore, they had just fought and won a war of independence together. The first presidential election was unanimous with every single electoral vote backing George Washington. Do you think an EU presidential election would play out like that?

Also, when the colonies united, the government they agreed on was by today's standards extremely small and decentralized and there was absolutely no welfare state. Revenue was mostly from tariffs on imports with zero income tax. Merging modern European governments would be a massive undertaking in comparison. And the wealth levels between countries are so lopsided that any such merger would mean massive transfer payments out of the rich countries to the poor. And what about tax rates? Low tax countries will not like this one bit. When the US colonies merged under the constitution, you could very truthfully go to the average citizen of any colony and say "basically you won't even notice any changes." Whereas for the EU, you have to say to the voters "your taxes will go up and we will now be sending $100 billion Euros per year to people in other countries."

> integrating further

What does that mean exactly?

I meet a lot of people do enjoy their nation's sovereignty especially as a shield from EU's poor and unpopular decisions that they don't get a vote in, and see the common currency and freedom of movement as just the right amount of integration. Making english an official language would be even better IMHO, but that's about it. I enjoy different countries having different politics and takes on topics, as it would be shit if all EU was a just a homogenous groupthink.

And I've never met anyone who thought the likes of Ursula and Kaja should be trusted with even more power and control over nations.

>I wouldn't describe integrating further to the point of becoming more like the US as "unstable".

More like the US, as-in a country? So also more like Germany, China, South Africa, etc. You are making a false equivalence - being like the US in one extremely non-US specific way does not mean you must be like the US in every other way.

I'm not sure you even understand what I'm saying - this has nothing to do with the US vs. the EU or if the US is reliable.

> And that's the most likely outcome

The recent electoral success of AfD in Germany and the National Front in France seem to point in the other direction.