Private finance is not a legitimate economic business model. It is also inevitably ethically problematic and contrary to the truth that individuals and systems must be hierarchically guided and directed by the highest of ethical concepts rather than by mere reason and/or self interest.
Public finance resolves the hierarchical aspect of that problem, but is as inevitably problematic as its private variety unless it is based on such high ethical concept and aligned policies.
Chaos has been confused with freedom in economic theory for at least the last 150 years.
There is no discerning an actual ethic in the midst of chaos, unless and until a stable datum is established upon which it and policies can be aligned.