Harvard's Michael Porter, a foremost expert on corporate strategy, would probably say that Sears' business units should be based near other similar types of businesses [[for example, their tool division near other tool companies and their apparel division near other apparel divisions). As for their home base headquarters, that should probably be near other large department store headquarters. The advantages of co-locating similar types of businesses are numerous and are described in Porter's numerous articles about strategy and economic clustering.
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