My simple take in this is that the relationship described in this is reversely related i.e. Business Excellence cannot happen without Operational Excellence which cannot be achieved with no Process Excellence which in turn cannot be conceived without Personal Excellence. In other words, excellence of a business is directly interlinked to the personal excellence quotient of its founders, core members and its employees. A sense of desire to achieve self excellence in individuals leads to defining excellent process in an organization which leads to operational excellence within business units which ultimately leads to the company or the business a whole to excel.