Two wealthy individuals each invested $1 million in productive assets. The first investor purchased real estate that generated net rental income of $80,000. The second investor bought stock in a start-up company that generated net long-term capital gains of $80,000. Under the Internal Revenue Code, rental income is taxed at ordinary tax rates, but long-term capital gains are taxed at a lower rate. Under Aristotle's philosophy of distributive justice, is this difference in taxation justified?