the system of direct democracy in greece work by making everything equal. Everyone is treated the same way. For example, the public assembly of all the citizens made all important decisions on such questions as peace or war. Everyone is united. All citizens participate directly in decision making which made them happy.
Power were to the people so mostly everyone benefited from this system.
This is so not fair.
Only the adult male citizens who were able to vote. Women, slaves and children did not have the right to vote.