The HBR (2004) article entitled " Customer-Centered Brand Management," argues that brand managers should "make (their) brands as narrow as possible.

The HBR (2004) article entitled "Customer-Centered Brand Management," argues that brand managers should "make (their) brands as narrow as possible." Explain a) why this is a sensible general advice to today's brand managers, and b) under what circumstances it may not be a good guideline to follow.