The problem with income equality and most of your other reasons is, ‘who gets to decide?’
I used to think of myself as a socialist (until I learned what it was) but even then I wondered who got to do the deciding, and how they got into positions of power to do the deciding.
Now I understand socialism is merely another, cleverer, way of establishing a rigid and immoveable elite who live well while issuing propaganda on ‘income equality’.
Unelected bureaucrats who can decide who gets what are in the final analysis bribeable. They take bribes.
Then you will get moved from category A, ‘rich’, to category B, ‘poor’, and recieve state funds on top of your other funds, priveliges. In Greece, I have read, bribes are simply offered in cash in envelopes.
I don't envision a "who" making any kind of decision like this. How did income and productivity move together until the mid-1970's?
Something happened to unhitch those measures. I think there are a few reasons, i.e. disempowering of labor, offshoring of jobs, trade agreements without some sort of wage protection mechanism, etc.