why would pepsi do that? Because the bottom line of any company is to make more money for the stock holders Its a law
http://www.youtube.com/watch?v=SnE8D3tgZ5c
150 years ago, the business corporation was a relatively insignificant institution. Today, it is all-pervasive. Like the Church, the Monarchy and the Communist Party in other times and places, the corporation is today's dominant institution. This documentary examines the nature, evolution, impacts, and possible futures of the modern business corporation. Initially given a narrow legal mandate, what has allowed today's corporation to achieve such extraordinary power and influence over our lives? We begin our inquiry as scandals threaten to trigger a wide debate about the lack of public control over big corporations.
Having acquired the legal rights and protections of a person, the question arises - what kind of person is the corporation?
Corporations were given the rights of immortal persons. But then special kinds of persons, persons who had no moral conscience. These are a special kind of persons, which are designed by law, to be concerned only for their stockholders. And not, say, what are sometimes called their stakeholders, like the community or the work force or whatever.
This isnt about this post but answers they whys They act as they do very well