How do you figure that? Statistics just say Linux has just over 2% market share in Europe [0], ~1.74% in the US [1], and ~1.5% in North America. Apple has a 30% higher market share in NA than in Europe. ChromeOS has a ~5 times higher market share in NA. This goes out of everyone else's market share.
The EU alone is ~450 million citizens, ~30% higher than the US. Europe has ~750 million citizens, ~50% more than North America.
Any reason to suspect that despite the higher population and the higher market share within that, there are still substantially fewer Linux users in Europe? And if so, what are the actual numbers of end users for each? You'd have to assume the "desktop market" is more than 3 times lower in Europe vs. NA to conclude that there are fewer Linux user in Europe.
[0] https://gs.statcounter.com/os-market-share/desktop/europe
[1] https://gs.statcounter.com/os-market-share/desktop/united-st...
[2] https://gs.statcounter.com/os-market-share/desktop/north-ame...