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.

If only we had more of this. Why is it so rare?

Do they have a benevolent dictator? Is this a temporary glitch that will be "corrected" when profits aren't looking as good? Are they a monopoly?

I'm genuinely curious.

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.

Correct