Some people might move to Dubai because its income tax is low or even nil - that attracts people who are more interested in their own well being than their communities'.
Now some people - I would include myself here (rightly or wrongly, it doesn't really matter) - look at countries with high taxes and low inequality and enjoy the idea of a country where the well being of the community might came before than yourself getting rich.
It's all a bit utopical (and, knowing Copenhagen, it really feels a bit off reality) but I can't help not thinking about it.