That service left almost all of the 40 percent of Apple owners who took their Apple devices to the Genius Bar very happy. Nearly 90 percent of consumers who used Apple’s tech service said they were extremely or very satisfied. In contrast, top 2 box satisfaction among all consumer service interactions was 78 percent. A major part of their satisfaction came from the fact that only a small percentage actually paid for their service. According to the report, 88 percent of Genius Bar consumers said their service was free compared to 78 percent of all consumers.

I would say this goes for most companies. The problem is not everyone gets the importance of customer service and how it affects future purchases. Apple does.