Not much. The Mack streetcar was gone by the 1950s and the street was still vibrant.
If you go from 1.8 million people down to 750 thousand, you need fewer stores, fewer houses, and you will have fewer streetcar and bus riders.
When i went to Jackson 51-53, all of the blocks around the school were filled with houses or two story flats. You look at Google Streetview now and see many blocks with just a couple of houses. Why open a store to serve an urban prairie?
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