Let's weave together two threads that look different: systemic unfairness and civilizational psychosis. As I often note, social species that organize themselves into hierarchies (i.e. primates, including humans) have an innate sensitivity to fairness, as this trait is essential to maintaining social stability, and therefore it has been selected as advantageous.

This sensitivity applies both to individual instances of unfairness / injustice and to systemic unfairness / injustice. If there is no redress when an individual is treated unfairly or abused, the social order is weakened. This is why early civilizations instituted legal codes and systems of redress as they expanded into nations / empires that needed bureaucracies to organize, manage and enforce the rules and responsibilities of every class.

If the mechanisms of redress have become empty shams, then the unfairness is systemic: it isn't just some individuals who have been treated unfairly--everyone is being exploited and treated differently from what the system claims is the operative set of values and rules.

When there's an external source of wealth to be exploited, the leadership has the luxury of becoming extractive and oppressive, because they have a source of wealth that's external to their own populace. Consider the progression from a society of systemic fairness to a society of systemic unfairness.

Consider a fledgling nation that was a society with high levels of social trust and cohesion generated by a dutiful leadership, social mobility and a system in which social pressures meant members of each social class had to respect the same set of social rules.

This structure is the essential foundation of a functional society and economy, for if the resident populace is immiserated by an unfair system, they respond by either fleeing the system (i.e. opting out or leaving), resisting the unfairness / exploitation or revolting against the status quo.

If the nation transitions into an expansionist empire, the leadership can jettison fairness / redress because it can extract wealth via conquest or exploiting new resources. The bureaucracy is co-opted / bought off via the spoils of conquest and corruption, and as the imperium expands, it has sufficient wealth to buy off the citizenry class with bread and circuses or equivalent largesse.

In other words, systemic unfairness--what we now call a rigged casino--is accepted as long as the key social classes feel they're getting ahead. The Roman state / empire is an example of these dynamics, but there are many others.