Moore advocates targeting a single niche market, or "beachhead", and focusing all resources to achieve dominance in that market. This allows a company to leverage resources, build word-of-mouth, and be seen as a market leader. Attempting to sell to multiple segments at once dilutes efforts and makes it nearly impossible to cross the chasm into the mainstream market. The excerpt provides a fictional example of a startup failing because it did not properly target a niche and recognize the difference between early adopters and the mainstream.