Employment opportunities have been moving out . This is true of business and retail jobs. The jobs have moved into areas where Anglos live . Many minorities lack personal transportation and many cities do not have adequate public transportation. Segregated housing patterns also acts to exclude a growing number of minorities from the job market.
Manufacturing is more efficient in single level factories as opposed to multi-level factories.
The growth of efficient truck transportation means factories can relocate to rural areas where as in the past they were required out of necessity to locate in central cities along major water and rail networks. The work habits of inner city employees have been criticized. Some manufacturing concerns move to avoid unionization. Retail and wholesale trade moves to the suburbs to be where the buyers are. People can either commute long distance or they can move .