He describes the opposite of "trying to be everything for everyone", namely finding your niche (where nobody can yank you out) by constant iteration of product.

He describes the opposite of "trying to be everything for everyone", namely finding your niche (where nobody can yank you out) by constant iteration of product. The point to keep in mind: you will loose customers during the process and you will win new ones. The important thing is to make sure the new customers are a better fit.