If we believe what Walter Scheidel writes in his book "The Great Leveler: Violence and the History of Inequality from the Stone Age to the Twenty-First Century" the answer is No.
Throughout history, civilisation and (rising) inequality have been two sides of the same coin.
At least during peaceful and normal times. In the long run, political and material inequality evolved in tandem.
There are only four different kinds of violent ruptures which have flattened inequality:
Are there peaceful alternatives that have produced similar results? Scheidel reviews a wide variety of potential candidates, most notably land reform, economic crises, democratization, and economic development, but his conclusion is rather depressing: only if land reform comes with a lot of violence there is some leveling ; the same applies for the other measures: in peaceful times socio-economic inequality remains stable or keeps rising.
What about trade? - "A survey of trends in some eighty countries between 1970 and 2005 finds that freedom of international trade and concurrent deregulation significantly raised inequality. Although globalization generally favors economic growth, elites tend to benefit disproportionately in both developed and developing countries."
His summary is rather bleak:
"History teaches us two important things about leveling. One is that radical policy interventions occur in times of crisis.
The second lesson is even more straightforward: policymaking can take us only so far. Time and again the compression of material imbalances within societies was driven by violent forces either that were outside human control or that are now far beyond the scope of any viable political agenda."