I resigned three months ago and moved to a different company in a different industry.
After being exposed to a new culture and distance myself from my traumatic experience at XOM, I gained a new perspective on what is really wrong with XOM.
The problem is that there are no mechanisms to prevent implicit biases and the value system that rewards diplomacy, obedience and conformity over honestly, care and competence.
The top 15% only like, promote and sponsor those who behave like them and share the same value system.
Yes, a few "minorities" have joined the top 15% in recent years, primarily women, and a few non-white, non-american individuals, but it's just a facade.
Those individuals in such "minorities" share the same value system or are lured into adopting it (or pretending they have adopted it) with ridiculously high salaries and license to make mistakes with no accountability so they come to believe there must be something inherently meritorious beyond their color, nationality or gender that justify their acceptance in this "elite" group and the behaviors they are required to embrace to remain in such group.
There are no "checks and balances" to prevent this implicit bias. The top 15 % decide who belong to the top 15% during the performance review process and such decision is biased towards those who behave, act and look like the the top 15%.
Because such bias is invisible to those in this group, a feedback loop is created by which the decision makers select and preserve their clones. In this way the same type of individuals with the same behaviors and value system perpetuate in such elite group.
The other 85% are hiring mistakes. They are people that do not engage in those behaviors and do not share such value system because doing so would require a fundamental change of their core identity as individuals.
This dynamics is also true for other companies.
However, other companies find a way to reach the equilibrium point at 95% to 5% as opposed to the xom equilibrium of 15%-to-85%.
They accomplish this with mechanisms to avoid implicit biases that prevent decision makers from selecting and promoting their clones, and by embracing more universally shared behaviors and values such as honesty, care, compassion, candor, and competency.