Bruce Henderson — American Businessman died on December 30, 1992

Bruce Doolin Henderson was the founder of the Boston Consulting Group. Henderson founded BCG in 1963 in Boston, Massachusetts. He headed the firm as President and CEO until 1980 and stayed on as Chairman until 1985... (wikipedia)

Your most dangerous competitors are those that are most like you.
Any corporate policy and plan which is typical of the industry is doomed to mediocrity. Where this is not so, it should be possible to demonstrate that all other competitors are at a distinct disadvantage.
The essential element of successful strategy is that it derives its success from the differences between competitors with a consequent difference in their behavior.
The objective is to enlarge the scope of your advantage which can only happen at someone else's expense.