Grocery stores are some of the lowest margin businesses in the US (on the order of 3%). Payroll is a pretty large expense, so it's not as if Walmart can just w

Grocery stores are some of the lowest margin businesses in the US (on the order of 3%). Payroll is a pretty large expense, so it's not as if Walmart can just willy-nilly double salaries because the Waltons are extremely wealthy. If you were to wave a magic wand and redistribute the Waltons' gains to US employees, it would be something like $2000/year.