As the linked article is actually saying: Inside businesses, there's a tendency to assume success is luck or "I'm just such a genius." The question "where did we go right?" is too infrequently asked. Perhaps it is luck or it is genius, but there's never a postmortem to answer which and thus better plan for the future.
Harvard Business Review has posted something right up our alley: "Why Leaders Don't Learn From Success"
Also, the HBR essay links to a similar discussion of how Pixar avoids being brainwashed by its own success (something I had always wondered about - they seem too consistently successful): "How Pixar Fosters Collective Creativity".