I find this argument unconvincing not just because the evidence doesn't support it (and it doesn't), but because this claim is the same one made whenever anyone

I find this argument unconvincing not just because the evidence doesn't support it (and it doesn't), but because this claim is the same one made whenever anyone proposes anything to put more money in the hands of the poors. Every time, it's the exact same argument, "if you give the poors more, everything will cost more, and they'll be right back where they started." And, well, we didn't always look like this. Obviously it's possible for there to be a different equilibrium in society, one with less disparity. So something has changed. Seems like there should be ways to change it back, even to the disparity we had (overall, I know life was horrible for PoC) in post-WWII America. That'd be a step up from this.