They have no concept of "Leadership" and no ability to actually lead a team or inspire others towards a common goal. Starts at the top and goes all the way down. Heaven forbid the executive team would have to interact with or be seen with the everyday grunts, much safer in the God Pod.
XOM Managers are just that, the only reason they have any authority or power is their title and the hierarchical system that has been set up around them. XOM becomes more tolerable when you understand it is just a giant project management firm who relies on their process and standards to justify everything, no need for people who can deal with uncertainties or nuances.
You will find a few natural leaders around the company, but they are few and far between; as most bail when they realize their effort isn't rewarded and playing the system doesn't align with what they want to accomplish.