Right, like Luxembourg or Monaco, the places with the highest GDP in the world. Or Oak Bay.
There is no correlation between high-density and high GDP. Again with the picking and choosing of data to make your point.
Monaco is the second highest density country in the world (if you include Macau); Luxembourg is number 62. Here are some countries between them: Bangladesh (GDP per capita of $4,204), Nauru (GDP per capita of $2,500), Rawanda (GDP per capita of $1,905), Haiti (GDP per capital of $1,784), Burundi (GDP per capita of $818), and I could go on.
No need to inflate your point with irrelevant and baseless stats.