This is bad for low-income people, who get pushed into cheap areas and can't climb out.

• Jobs and wealth are concentrating in expensive cities like San Diego and Los Angeles.
• Poorer people can't afford those places, so they move to cheap rural areas just to survive.
• Once there, with few good jobs around, they get stuck and can't move back.
• This traps poverty in low-cost regions while opportunity stays in the pricey ones.

Outlook: Expect the gap between rich, job-rich cities and poor, stuck regions to keep widening.