The primary reason, aside from legal obligation, why business leaders become quite active in their adoption of a diversity policy is mainly to prevent the undesirable situations that arise as a result of a business or organization not transforming in tandem with the society that changes outside the window.
Whenever an organization reaches a comfort zone where everybody agrees with everybody else, where there is no difference in the thinking of the employees, and where the same dynamics continuously take place, there is trouble; it means that, somewhere within the core of the group, there is a fake sense of security through a complacency that is bound to be torn apart completely if there is any change in the current working conditions. If a leader continuously employs individuals with strongly similar traits, any chance for change (either outer or inner change) will be near impossible.
Contrastingly, by including people of diverse backgrounds, lifestyles, ethnicity, and religion the work environment becomes much stronger. This is because, rather than weakening the intellect with a mindset of complacency, the work culture will be infused with an atmosphere strengthened by the different ideas, different points of view, and by the myriad of diverse problem solving skills that come as a result of a heterogeneous group of people. Change will never be a fear factor in a heterogeneous organization, because change and diversity already permeate the atmosphere.
The corporate culture of a company that has a successful diversity policy is one that is always open to any challenges. This is because the differences among the employees will lead them to find ways to decode each other, to understand each other, and to accept each other. The result is that, as the Cultural Anthropology model suggests, the differences will eventually no longer be considered and the group will shift toward a tendency to extrapolate their similarities; this is what ultimately makes the group stronger: the fact that their differences are acknowledges, but are not considered a hindrance.
Hence, you will find in companies that employ people from all cultures and walks of life a culture of more sophistication and worldly knowledge than in a company where the same dynamics are done and expected to continue in the same fashion.
It is no different than when we compare students from a school in a small town to students from a school in an urban area: most people would agree that the small town children are not as savvy, street-wise, acclimatized to change, nor cosmopolitan as urban children who experience diversity daily. Hence, the small town student might be considered unable to cope with the rough and multifaceted life in the city: in other words, the student is considered to be socially weaker than the student who is from the city who is open to change and exposed to different people.
Therefore, a company who adopts a diversity policy is bound to survive the global, dynamic and transformational society of the 21st century because each member of the group is individually equipped both socially and mentally to deal with today's changing world.