Win by Obsessing Over the Customer

Remember the Trojan Horse?  This military strategy used by the Greeks won for them a long running battle with Troy.  The Greeks loaded a wooden horse with troops secretly placed inside, and the Trojans pulled the horse into their city as a victory trophy while the Greeks pretended to sail away in defeat. At night, the Greek soldiers came out of their hiding place, and opened the gates of Troy for the rest of the Greek army who had sailed back during the night. The Greeks decisively ended the 10 year war with Troy with a surprise strategy that was both innovative and disruptive.