The book The United States of Wal-Mart by John Dicker laid this all out pretty clearly nearly 20 years ago.

* corrected spelling the author's name.

**https://www.amazon.com/United-States-Wal-Mart-John-Dicker/dp...

There's a book called The United States of Wal-Mart that details a lot of the damage that Wal-Mart has done. I wouldn't be surprised if there's a follow up for Amazon.

https://www.amazon.com/United-States-Wal-Mart-John-Dicker/dp...