You're right about that.
But in Europe no country is as you say "who look, act, and think exactly like you do".
Heck, the majority in the UK still think they're outside Europe (and sometimes I wonder if they are right about that too ...) and Turkey is still not sure if they want to be part of Europe or the Middle East Region.
I think that is one of the differences between Europe and the USA. Everything is a lot smaller over here in Europe, still everyone is much further away: cultural, language, style, arts, literature, music, looks, food, ... We Europeans don't travel as much as you CONUS people do (our mistake, I know).
So, in fact a European BPX would be a great opportunity for us "Europeans" to get to know each other better. No melting of cultures over here in Europe. I think that's a prerogative of the US society, something we apparently don't (want to) know?? Again: our mistake (up to some extend).
The US is like "one nation", Europe is but a bunch of countries that happen to be in the same continent. We don't even know where Europe ends. (Did you know that even Russia is a partial in Europe?)
So the "risk" you mention would be more on your side of the ocean, I'm guessing.
But yes, I'm in favor of a worldwide BPX also - right next to a EBPX. I don't want a EBPX if it would drain the worldwide BPX, but somehow I don't think that will happen. There are many more participants in the US than in Europe. And a EBPX might encourage European APUG members to start exchanging too - even join the worldwide BPX in due time?
And I'll join both.
Bert from Holland
(Edit: I hope I didn't offend anyone. If I did I apologize upfront: it was unintended)