Ecological Niche: Specialty Market Strategy

The major difference between the specialty skill niche and the specialty market niche is that the former is built arond a product or service and the latter around specialized knowledge of a market. (...) The specialty market niche has the same requirements as the specialty skill niche: systematic analysis of a new trend, industry or market; a specific innovative contribution, if only a "twist" (...); and continual work to improve the product and especially the service, so that leadership, once obtained, will be retained.

The Essential Drucker
Peter F. Drucker
Collins Business (2005)