A lot of people think that capitalism is natural, the default state of things, because that is what they grew up with, and all they know. But there is no law written on the heavens that this is the way we ought to organise our societies, and that prevents us conceiving of anything better. It was natural for early humans to live in caves; these days, we have houses, mansions, even palaces. Progress happens, if we let it.
When some have billions of $ to spend on luxuries, entertainment and hobbies, and some cannot afford to eat, I think we are entitled to question the idea of the capitalism that generates such a result, however natural it may or may not be, as being a definitive moral good, incapable of improvement.
Cheers, Strivax