Lets not make the mistake of accepting the left’s argument that income inequality is a problem. No one has described WHY this would be a problem other than resentment (mostly by leftists). Until the wealth of a few limits the amount of goods available to the masses this is just another imaginary issue ginned up by the left to justify redistribution and income confiscation.
Envy is an unfortunate side effect of vanity. Leftists ride to power on the flames of envy so they incite vanity and envy at every opportunity, and the urban media helps them. History shows though that happiness and prosperity only come to nations to the extent they succeed at suppressing envy.