>1. If you get higher interest rate returns, how do you think that is being paid for if poor people aren't getting higher rates?
Loans to business, home loans, etc. Education loans really weren't a big thing because education used to be subsidized. Also, poor people aren't the only source of ROI on loans. They're quite lucrative though because they seldom are able to pay the principal and are an endless source of interest payments.
2. Unexpectedly lower interest rates increase employer competition in the labor market, raising wages. This is well studied.
Yet wages have been largely stagnant for 40 years, how do you account for that? Got links?
https://www.epi.org/publication/charting-wage-stagnation/
3. The quality of life of a poor person in the US is unimaginably better than that of someone ranked relatively the same 100 years ago.
I'm interested in how you are measuring this. Got any links? How about the quality of life from someone 40 years ago before neoliberalism?
>Denying those massive quality life improvements is absurd
Which quality of life improvements are you referring to? Are you being intentionally vague? I mean we can buy cheap plastic crap from China, but that's at the expense of US manufacturing jobs, isn't it? Food certainly isn't cheaper. Healthcare and housing isn't either. So yes, if you believe buying cheap disposable stuff from overseas is a massive quality of life improvement, then ok. Take a stroll down middle America and tell me how good they have it. I know lots of towns with boarded up main streets because all the manufacturing went overseas. That's where the investment went.
Again, you're quoting macroeconomic theory when microeconomic conditions on the ground subvert any gains in macroeconomic theory.
How does investment drive up wages when labor investment is say 90% overseas or automation?