4 is round.

4 is not round. 4 has a dick face.
Wealth disparity is not the worst thing...historical forces that typically remove the disparity are much more disagreeable.
I am reading a book that systematically looked at what reduces inequality..and turns out only major wars and deadly pandemics (plaque in medieval Europe) were able to temporarily reduce inequality.
All societies "naturally'" trend toward increasing inequality in relatively peaceful conditions (over centuries).
You seem to be indicating the mass pandemics / disasters that make the wealthy less wealthy and taking that as some kind of an equalizing force. The truth is, the real disparity between the rich and poor keeps on increasing. At least that was the case until the industrial age kicked in.
And now only thanks to the advent of internet and perhaps to some degrees, cryptos, the wealth that was accumulated by the rich for eons, has trickled down to the economically weaker sections of the population.
As far as I know, there are very few instances where the poor are given a solid way to claw out of poverty.