Admittedly, I missed the dichotomy in your original post between those making ends meet and those aspiring to wealth disparity - I thought you meant that even those just trying to make ends meet aspire to wealth disparity, which is why egalitarian movements fail, when what I think you meant is that once people stop having to make ends meet, they then begin to aspire wealth disparity.

I would be very interested to see the data you are basing your knowledge of society on, since it must be outside your personal experience.

Also I'm not familiar with the modern social class definition system that you speak of, where can I read about that?