Your wikipedia reference doea not mention Luxembourg. The median salary is more than 20 percent higher than danmark https://today.rtl.lu/news/luxembourg/a/20073

Your wikipedia reference doea not mention Luxembourg. The median salary is more than 20 percent higher than danmark https://today.rtl.lu/news/luxembourg/a/2007306.html https://today.rtl.lu/news/luxembourg/a/2007306.html and taxes are much lower here too. Housing is expensive, but that seems to be a global trend.