In the 1970s several researchers looked into how different technology companies went from "unheard-of" to mainstream.  What they discovered still holds true today, and is codified in Geoffrey A. Moore's book "Crossing the Chasm".  Every product category follows this basic pattern of adoption, and you must learn to understand and master the 5 very-different types of customers to stay relevant in your market.

AuthorPete Oliver-Krueger