Because wealth, unlike those other things, is readily transferable by taxation to level the playing field. I don't necessarily agree it should be, but if we could sap intelligence or other skills from the gifted and spread them around to shore up deficient people, I bet there would be a faction of people supporting this as the moral thing to do: "why should talented musicians meet and mate and produce offspring who keep disproportionately high inherited talent they didn't earn?", they might say.
This is 100% what Generative AI is doing and I am one of those people who "support this as a moral thing to do".
I would go as far as to claim that it's a moral bad as a creative to put a payway behind any of your work and those who subvert it (i.e. fine-tuning your likeness into a model) are doing ethically good work.
