The problem is that under capitalism, which is a competitive ecosystem, over the short term those qualities are selected against, and it constantly, naturally, seeks continuous vertical integration which necessarily puts the wealth and power into fewer and fewer hands over time.

Now you can claim this can be prevented with regulation, but in practice that will only slow the process since even slow centralization of wealth leads to people with vastly disproportionate wealth, and therefore influence over regulatory policies, which they will degrade over time (once again because the corporations which do deregulate themselves will be more selected for in a naturally selective ecosystem than those which fail to do so).

Capitalism as a system basically rewards the most unethical practices in it’s ecosystem with more power.