Yes if the EU collapsed recession seems inevitable, but what if it slowly fades? New trade agreements will be made, benefiting some more than others, just like the EU did when it formed.
'Also not sure what on earth "winning team" means.'
Economic aggressor would be another way of putting it. For instance, threatening Canada & Mexico for concessions to NATO that benefit the US. Pulling out of the TPP in order to negotiate 1-1 deals.
'Some countries have advantages in some areas, disadvantages in others. But everyone depends on global stability, free trade and efficient movement of human capital.'
Do we really have those things now? I see a Europe dominated by German interests, treating Greece and others as vassal states. US/CA colonialism over an entire continent. Russia desperately trying rebuild their sphere, and every other regional power exploiting what they can.
Perhaps I just have a grim view of the world.