I have attempted to answer this question on my own through reading books, blog, and other economic pieces of literature but they all fail to articulate why wealth or income disparities matter. Now obviously leveraging slave labor or paying someone literal pennies is an issue. But why does the disparity of wealth between say the middle class and the top 1% matter?
From what I have studied it seems cultivating a competitive market (fair prices for goods and housing), managing inflation, and ensuring a strong currency is really what is necessary. Given these things everyone would be able to buy and sell goods or services and still be able to squirrel some money away for retirement. What am I missing?