John Rawls claimed "justice" demands governments use their power to benefit the least well off in a given society. But then he arbitrarily restricts the scope of these programs to particular nation-states. This betrays a fundamental problem with his idea of inequality.
If capitalism did not exist, it would be necessary to invent it — and its discovery would be rightly regarded as one of the great triumphs of the human mind.
In a world of demanding and ever-changing consumers, there is always a way to do things better, with greater quality, and at a lower price. Entrepeneurs must learn how to do this, or they will lose out to those who can.