Wal-Mart is what a company would be like if it was run by Emperor Palpatine, if he was cheap.
Wal-Mart was started by Sam Walton, a simple country man from Alabama who hated people. He decided to make acompany where everyone suffered, but basically begged to suffer because shit was so cheap. He succeeded.
Wal-Mart is kind of like OCP in Robocop; they produce a little bit of everything, and none of it well. And they are fueled by evil