Capitalism is a form of unjust hierarchy

It's a form of hierarchy through economic accumulation. The problem of justice is in the privative accumulation. When we start the game playing from a stacked deck, only a handful of people ever have an opportunity to accumulate new capital, while the rest of us are bound to serve through debt.

Leveling the playing field allows people to accumulate within their lifetimes, and incentivizes capital development broadly, without allowing intergenerational accumulation to stagnant the system.

But wealth redistribution is incredibly unpopular among the people with the most political capital, necessitating some kind of social or economic revolution to achieve change.