You could just punch income inequality into Google Scholar or Google Books and learn at least 100 ways capital concentration or poverty is perpetuated, via the natural experiments of many rich western countries and US states.
Don't read too much into this analogy, but if I search for Flat Earth I'll get a load of stuff that talks about how the Earth is flat, and not much else.
For example, you may not get the following explanation much, even though it requires no conspiracies and explains the outcomes: income is disproportionate because risk and capital are more important to a business' success than any particular individual's labour, and so they are correspondingly rewarded more as well.
Even if all bias were removed from life, any free meritocracy would still perpetuate it. People can choose to make less, and some people can't add as much value as others.
