Well, what you’re talking about is modern finance capitalism, not a Constitutional republic (or monarchy or whatever). One of the odder things about American political discourse is that we conflate how markets function with our form of government. Anyway, here’s some lefty economics you can argue with: https://www.epi.org/publication/top-charts-of-2018-twelve-charts-that-show-how-policy-could-reduce-inequality-but-is-making-it-worse-instead/