It is virtually a tautology to say that the moral failings of capitalism are already condemned by current moral systems. It's hard to see how one more way of condemning them would help.

If you want to solve problems with capitalism, the only way to do it is to arrange things such that morally bad actions are more expensive. 'Crime does not pay' kinda thing.

It is hard to see what sort of institution could arrange that other than governments. There have to be robust, extra-market methods of enforcement which will decide who gets the penalties, how much they are, and ensures that people pay those penalties.