“…In a high-tech firm, uniqueness would be very important, whereas in a cleaning firm requiring low-qualified staff it would not be so relevant. Furthermore, in some cases, having unique CEs may become a "core rigidity" because of their firm-specific knowledge (Coff, 1997;Lengnick-Hall & Lengnick-Hall, 1988;Leonard-Barton, 1992;O'Driscoll, Carson, & Gilmore, 2001); such workers may become sources of defensive routines that hinder "dynamic capabilities" (Lado & Wilson, 1994;Teece, Pisano, & Shuen, 1997). Atchison (1991) To summarize, developing and utilizing valuable and/or unique CEs can enhance competitive advantage.…”