That said, I do really feel the 'good enough' vibe here in the EU; most people I talk to who have companies (just started or older) have the 'it's good enough this way' attitude. 'We' generally don't want to be billionaires or even have billion Euro companies. Once you are making insane profit margins and have a fat company bank account, all employees are happy, growth is stopped and the goal becomes to sustain that situation. I know great entrepreneurs here who started out with crazy plans; once hitting that point (and that can be any revenue mind you; for some companies it's E10 million/year, for others it's E100 million/year, but rarely more than that) they find it good enough. I think a lot stems from that feeling of not actually wanting to be 'the biggest', just wanting a stable, sustainable company producing profit margins year after year to lick your fingers by.
Edit: read the comments; 500 biggest companies in the world, 132 US, 166 EU and France has more than the UK. Didn't check those things, just copying here for completeness.