They buy products from each other, and shut out more and more people if society.

You see the homeless drug addict on the street? They want more of that.

Exchange still occurs globally and amongst the upper class.

Just imagine a world in which the only products manufactured are exclusively chasing the dollars of wealthy investors. So like yachts, custom giant statues, kill drone perimeters, etc.

When we only have white cishet billionaires, we can abolish money.