[medvezhenok]

I think most zoning regulations came as a backlash to the crime waves in the 60s/70s and were intended to keep "safe" neighborhoods "safe". This uses house prices as a tool to separate people into "desirables" and "undesirables" (roughly). China (and the former Soviet Union) did/does it more explicitly via the hukou system - if you don't have a hukou, you can't live in a given city nor attend the school/use the city's resources.

The process in the Soviet Union might not have involved financial capital, but it involved human capital (i.e. if your profession was not "respectable", or if you were ever convicted of a criminal act, you might not receive permission to get an apartment (or even a room) in a top tier city like St. Petersburg or Moscow)