Charles Hugh Smith asks that question. He offers this graphic of the life cycle of a bureaucracy:
In an accompanying article, he goes into more detail about how the competent workers simply give up and withdraw under politically correct and other pressures, leaving the incompetent and the incapable to try to keep the system going - a thankless and usually fruitless task. He concludes:
As the competent leadership leaves, the incompetent takes the reins, blind to their own incompetence. It all looked so easy when the competent were at the helm, but reality is a cruel taskmaster, and all the excuses that worked as an underling wear thin once the incompetent are in leadership roles.
By this terminal stage, the competent have been driven out, quit or burned out. There's only slack-masters and incompetent left, and the toxic work environment has been institutionalized, so no competent individual will even bother applying, much less take a job doomed to burnout and failure.
This is why systems are breaking down before our eyes and why the breakdowns will spread with alarming rapidity due [to] the tightly bound structure of complex systems.
Go read the whole thing. It's worth your time. I think he very accurately describes the breakdown in corporate, government and bureaucratic structures that we're seeing all around us.