Starbucks Delivering Customer Service - case analyses

What does Starbucks customer base look like today? Are some of its customers different from the ones who made up Starbucks original target market? In what ways are they different? Do the different segments define customer service the same way? How does Starbucks acquire customers today? What determines whether customers return to Starbucks and become regular customers? Does the behavior of one type of customer affect the experience of another? What determines the profitability of a customer? Should Starbucks simply focus on delighting its most profitable customers? What other benefits do the various customer segments bring to the brand?