The point of wealth inequality is, that it is rapidly increasing -- particularly in the last 20 years.

The parent poster implied, that by increasing the wealth of some, all will benefit. In my country, this was not the case in the last 20 years. The middle class that was rather broad and healthy, is loosing particularly in the less wealthy part -- many of those people fall down the ladder and are poor and will be even poorer when they are in old age.

My country once was one of the wealthiest of the world, because many people where wealthy and earned good money. It was unthinkable once, that big parts of the society might be poor or have to live from "soup kitchens" -- today it is reality and all projections show, that it will become even worse!

To be complete: My country is still one of the wealthiest of the world -- but with a much much smaller fraction of people owning the biggest part of this wealth.