> In this case Americans have chosen the suburbs in droves.
They've chosen their preferred option, given the current (meager) options. That doesn't mean people wouldn't choose walkable cities over suburbs---the option of walkable cities just functionally doesn't exist in the US for a middle income family.
And this isn't due to organic demand for suburban neighborhoods, either. In the US, central planning has had a major role in accelerating the development of suburbs. Tax incentives for home ownership were first rolled out during the New Deal, and these especially targeted single family homes. After the war, the dual-use civil-military interstate system was created and highways were subsidized which allowed neighborhood development far from the city center. Auto and petrochemical development were targeted for national security, which acted as a subsidy toward the gasoline-heavy suburban lifestyle. The 1970s energy crisis shifted US foreign policy toward stabilizing petrol prices, which has resulted in various military and CIA operations to that effect (Paul Wolfowitz was talking about securing oil in Iraq before 2nd Bush was even in office). Suburban homes in many cities consume more resources via public roads, water, sewer, electric than they pay in property taxes, but taxes are kept low for political reasons, because that's where voters live.
So there are quite a lot of extra-market forces that have shaped city planning. Now all of this has reached a scale where it is self-sustaining, but that doesn't mean people would have picked this route if the initial conditions were not so favorable.
They've chosen their preferred option, given the current (meager) options. That doesn't mean people wouldn't choose walkable cities over suburbs---the option of walkable cities just functionally doesn't exist in the US for a middle income family.
And this isn't due to organic demand for suburban neighborhoods, either. In the US, central planning has had a major role in accelerating the development of suburbs. Tax incentives for home ownership were first rolled out during the New Deal, and these especially targeted single family homes. After the war, the dual-use civil-military interstate system was created and highways were subsidized which allowed neighborhood development far from the city center. Auto and petrochemical development were targeted for national security, which acted as a subsidy toward the gasoline-heavy suburban lifestyle. The 1970s energy crisis shifted US foreign policy toward stabilizing petrol prices, which has resulted in various military and CIA operations to that effect (Paul Wolfowitz was talking about securing oil in Iraq before 2nd Bush was even in office). Suburban homes in many cities consume more resources via public roads, water, sewer, electric than they pay in property taxes, but taxes are kept low for political reasons, because that's where voters live.
So there are quite a lot of extra-market forces that have shaped city planning. Now all of this has reached a scale where it is self-sustaining, but that doesn't mean people would have picked this route if the initial conditions were not so favorable.