I imagine the GP was referring to the fact that Costco experiences that kind of growth while giving their employees excellent pay and benefits. Even low-level store employees typically make $20-30 an hour.
It’s because they don’t sell everything, and the things they do sell, they sell to the top 50%.
They also did have benevolent dictators who spent decades building up good will, but supposedly the new bosses as of a few years ago are not so benevolent anymore.
