Exactly. This is one of the (many) problems with the vulgar "homo economicus" view of human beings. Culture and nationality are likewise factors. Moving to anot

Exactly. This is one of the (many) problems with the vulgar "homo economicus" view of human beings. Culture and nationality are likewise factors. Moving to another country is difficult. You are moving to an alien culture with an alien language where you will be unfamiliar with a whole host of social realities, some of which may contradict what you believe. That's why immigrants usually create ethnic neighborhoods[0] and it is only their grandchildren onward who are fully assimilated into the adopted nation, usually facilitated through intermarriage which tends to water down ethnic ties. [0] Tangentially, it is an interesting question how long the ethnic European neighborhoods, nostalgically portrayed in movies like "The Godfather", that began to dissolve around WWII could have lasted. According to one view of what is commonly called "white flight", a major factor was the WASP ruling class' social engineering and ethnic cleansing of them out of existence by dispersing them across the suburbs which hastened their assimilation ("into what?" is itself a question worth pursuing; a WASP-constructed "identity"?). The reason this migration out of the cities coincided with the civil rights movement, according to this view, is that the Great Migration of black sharecroppers from the South was effectively an instrument of mass migration into ethnic neighborhoods. Mass migration always fragments the peoples into which the migration flows. So, given this interpretation, this was not some manifestation of racism, but of disintegrating neighborhoods (the "white guys" throwing rocks in Marquette Park were apparently Lithuanians who felt that their community was threatened by this migration). Many of these neighborhoods were also Catholic, and with falling birth rates among Protestants following the 1930 Lambeth Conference, the idea of Catholics outbreeding them was not something they cared to endure.