The supposition is that a society and the government that created that society are good in proportion to how they financially reward ability and effort. Societies where wealth is proportional to ability would be better than those who reward people randomly or socialistically.
Socialism wouldn’t reward people for ability, effort, or goodness. The graph of such a reward scheme is shown as the graph of Socialism vs. Ability. Worse is a society that randomly rewards the people. Worst is a society that rewards an individual for being bad, lazy or inept.
A society that rewards a person proportionally to ability is not really possible. If you draw a straight line between a baseball player with 100 percent ability who makes $20 million a year to a person with ten percent ability would require that the person with 10 percent ability (a drug addict) to make $2 million per year. The linear straight line salary wouldn’t work.
The Capitalistic Income vs. Ability plot is shown below and is somewhat realistic. The Capitalistic Income vs. Ability plot shows a society that is also not great.
The Ability vs. Income and the Ability vs. Logarithmic income are the same except one has a logarithmic scale to better show the lower and more common incomes. This scale shows I = C*A^6 or Income equals Ability raised to the 6th power times a constant. This is somewhat how income is distributed in our society except that ability isn’t always important. The high pay scale of some with ability camouflages the fact that some wealthy people have little ability.
There is nothing good to say about the distribution of wealth in this or any known earth society.