If I was part of the Walton family of billionaires, I would create a chain of Discount Walmarts. These would have lower prices than the regular Walmart so that the the employees of the regular Walmart could afford the goods. The Discount Walmart would be staffed by even lower paid employees.
I would then create a Super Discount Walmart for the employees of the Discount Walmart, with even lower prices and even lower paid employees.
I would continue this until I ran out of potential employees or land.
It would be the Russian Doll of Capitalism.