Cute "analogy" - failed, but cute.
The 3000-5000 year time gap is just the start of the fail in this "analogy".
Nothing hinders people dissatisfied with their compensation from Walmart from changing jobs, from starting their own business, from getting further education and a career with better compensation. In Pharaonic Egypt, Pharaoh wasn't merely a player in the Egyptian economy, or even a major player. Pharaoh was the Egyptian economy.
The Egyptian workers who lived in "company towns" and got sick days and such were not the drudges hauling bricks & stone or chiseling the tombs into the hillsides in the Valley of the Kings. They were the architects, the civil engineers, and the skilled artisans. IOW, just as in the modern US, the people with skills and education got the better "compensation".
Just another stupid emotive Gotcha that cannot stand up to the slightest examination.