Why are specialty stores such as Office Depot, Bed Bath & Beyond, and Staples often called category killers?

Question

Quizplus · Accepted Answer

Specialty stores like Office Depot, Bed Bath & Beyond, and Staples are often called category killers because they dominate a particular category of merchandise, often priced lower than competitors. This can make it difficult for other retailers to compete in the same category and can ultimately destroy their profit potential.

Why Are Specialty Stores Such as Office Depot, Bed Bath