Because we see how things fail, and why. And it's usually intentional incompetence and/or greed.

Both are fixable, but both require the person or system wants to fix it. So, it's usually not fixed.

Things like death "fixes" things. So does leaving the position in simpler ways. Technology can force the issue and force removing incompetence, or equalizing greed.

But yeah, it's seeing "intentional incompetence and/or greed" causes stagnation or worse is very disheartening and sorrowful. We could do so much better.