There's more differences between EU countries than the US and Canada, or hell, US and Mexico for that matter. It's 27 countries with their own systems of govern

There's more differences between EU countries than the US and Canada, or hell, US and Mexico for that matter. It's 27 countries with their own systems of governance, choosing to work together in a partnership on an internal free movement of people, goods and capital. Yes it's far more integrated than any other group of countries, but they're still separate countries. The budget of the European Union is literally <1% of the EU GDP, for example. Although very influential, we shouldn't overstate its power. Even slight increases of this budget is immediately met with populist rhetoric in each member state, about how all money is flowing towards Brussels which is ostensibly deciding everything. And on a cultural level, there's no real integration whatsoever, not any more than the regular globalist integration that's not European in nature (e.g. speaking English and watching Hollywood movies). As a Dutch person I literally cannot even understand the native language of 97% of the EU population. It's a bit like asking why the United Nations hasn't worked out yet and why there's no single planetary utopian government yet. That having been said, I would say that the EU is an economic and military superpower, but it's not as direct or centralised like a single nation. But count the number of times the EU has been attacked, or count the amount of nuclear-able countries, or the EU countries part of the planetary superpower that is NATO. Of course it's not geared as being a EU military, nor geared towards fighting far-off wars, but it's super powerful for sure. As for Economy, on a PPS basis China, US and EU are all 16% of the world economy, on a nominal basis it's 15, 24, 18. Again, not centrally-steered but definitely a superpower. But for the same reasons you'd say "yes but it's decentralised, not one nation, so it's not a superpower despite all the economic/military might", I say that you can't even expect it to be. After all they're just 27 separate countries with their own governments, 13 of which are smaller than New York City, and California alone being bigger than all but 4 of them.