In America, the top 1% has 20% of the income, but pays almost 40% of the taxes. What is their 'fair share'? What is your fair share of someone else's income? C

In America, the top 1% has 20% of the income, but pays almost 40% of the taxes. What is their 'fair share'? What is your fair share of someone else's income? Countries like Norway or Sweden, which have more billionaires per capita than the USA have much less progressive tax codes.