Photo: Foundation for Economic Education
Cintas (CTAS) is the most powerful member of an oligopoly, has a broad moat, and outperforms competitors on many levels. Uniform rentals and facility services constitute 81% of the company's sales. One of the salient points when assessing this company is that those products and services are commodified. Assuming the company provides services equal to competitors (and judging from readers' commentary on SA, their services are exemplary), there is very little chance a prospective competitor could do to pry customers from Cintas' hands.
Due to the company's acquisition of G&K