One of my elective series of classes I took in college was Urban Studies. I didn't need it for my major, but; I wanted to take it anyway.
The thrust of several of my leftist, communist professors was the, "evil" and "unfairness," of white flight out of the major cities. They openly taught that it should be stopped because whitey takes his tax revenue with him.
The left hates the idea of the Suburb or anyone having the ability to commute away from the decaying, impoverished, crime ridden, crap holes these leftists have created.
I know there has been some joking here about this, but; they aren't joking. The Obama Administration is using all the regulatory power it has to eventually make it impossible to live outside of the city and commute to work in it. It will soon be too expensive to do so. They want to be able to hold successful people hostage so they can rape them via taxes.
Land usage control, control of any natural waterways or streams, water usage restrictions, restriction in new permits for home building, more and more costly permits to do anything on one's property, fines, levies, increases in tolls, gasoline taxes, easement restrictions and fees for new home construction and so on. A recent local example of this madness has been implemented in Maryland where property owners are taxed for the amount of rain that runs off their property. It is a move to make it too expensive for the average person to own any significant amount of land.