[gwbas1c]

You might want to look at "Why Liberalism Failed", specifically the chapter "The New Aristocracy."

The section "Classical Liberalism: Roots of the New Aristocracy", summarizes the fundamental philosophy behind why a certain amount of inequality is embraced in classically liberal countries (IE, democracies): Overall, it rises everyone's everyone's living standards; even the poor.

https://en.wikipedia.org/wiki/Why_Liberalism_Failed

(Just a warning: The author is very conservative and outspoken about social issues. Try to read to understand the author's opinion, instead of reading to agree or disagree.)