Social systems are much more complex than obsolete and utopian duality which you present. Social systems, as everything in Universe are of emerging nature (constantly changing). We need to strive for sustainable equality. Such equality is positive and can only be acquired through application of scientific method for social and environmental concern (example Natural Law/Resource-Based Economy)

Nobody needs to imagine total equality. That's not what anyone is talking about. It's just that the gap between the few at the top and the rest maybe is way too big.