First of all let me state that I'm no economics expert, so you can take whatever I say with a pinch of salt.
However I went on one of my voyages of random thought and ended up thinking about the state of countries economies and happened upon this image from a paper published in 1999
As you can see most of Europe and the UK is maxxed out in the 'red zones' of high GDP per square kilometer, however countries like USA and China are still, as far as I'm aware, the best off countries economically.
Just got me thinking, is it actually possible for areas like Europe and the UK to contend with the 'big hitters' economically when USA/China etc have so much more room to expand their economy unopposed?
Just my random thoughts from the day, thought I might try and spark some conversation from any 'knowledgeable' individuals lurking on the forums.