I believe it is mentioned under the concept of suht (if im not wrong), another thing that is atrocious in our time are taxes are based on income ie the working class has to pay. Where as, islam preaches wealth tax (in form of zakat) which would work as a good barriers against billionaires. Literally no one needs a billion dollars but somhow it is the norm that billionaires exists and pay little to no taxes but everyone else who do work have to pay ~20-40% in taxes