Shannon Jones just received an e-mail message from an angel investor who has agreed to listen to her pitch her business idea. The investor said, “Your timing is good—I just happen to be sitting on

$500,000 that I’m anxious to invest.

One thing I’ll warn you about ahead of time, however, is that you must show me that your business has the potential to achieve a sustainable competitive advantage. If you can’t show me that, I won’t invest.” Shannon has read about sustainable competitive advantage but is still a little hazy about the concept.

Explain the concept to Shannon.