Justified inequality is good as long as it filters out high quality from low quality. The genius should be compensated more than the low-life.

Systems that classify human potential at birth though are rather unfair and amount to nepotism. The opposite of objective quality. No matter how many jobs a King or Queen creates, the upper class is always above the lower class.

Also, absolute transfer of wealth doesn't mean relative transfer. Slavery nowadays is actually more expensive then just hiring illegals because of housing and food costs. Wealth here is transferred in an absolute sense.

That said, many Uber drivers are very happy with the steeping stone it lends them. Flexible hours, and rather decent pay.