Besides the philosophical question of whether it's a good thing for a city, I just don't understand the economics of it. How do all these places coexist? Where does the demand and up-front money come from? Is there actually real demand at all, or is it just completely manufactured/delusional (build it and they will come!)? When I lived there, people's shopping needs seemed fulfilled, and the population has flatlined since then [1]. I heard tell of some EU grants involved. Overall, it just doesn't seem sustainable from an economic perspective, even in the short-term.
[1] http://www.citypopulation.de/php/poland-zachodniopomorskie.p...