Class B is a different species. If they stop working, their money will still go up, indefinitely due to passive investments. The idea of getting to $0 is ridiculous because they get richer every day by doing nothing. Class B’s lifestyle is totally different than Class A.
Class A people like to invent all these other sub-classes to distance themselves from others in Class A: middle class. Upper middle class. Lower middle class. Middle upper middle class. It’s all pretty silly. We all have much more in common with each other than we do with people who get richer every day simply by existing.
Um, did you accidentally mix those two up? I think you meant Class B controls Class A. No?
The typically discussed classes in the US are lower, middle, upper which I always took to be one std below the mean income (lower) and one std above mean income (upper). Perhaps if we used mean days until $0 dollars in the bank if you stopped working it would be more useful.
However in the classic socialist sense of the world, or in other parts of the world, "working class" often just means "work for someone else."
And in that definition even I, an overpaid Google employee, am "working class"
The fact is that many of those middle class people are now poor but just don't want to accept it.
I'd always define myself as working class because while I have a STEM Masters degree I am entirely dependent upon my salary (which isn't that high, we don't have US level salaries in tech here in Southern Europe) and I have no other sources of income or wealth (real estate, investments etc.)
I think the insistence of many people that they aren't "working class" is bad as it prevents them from seeing what is really in their best interests.