I have yet to see evidence that what gets done in the C-suite of many (not all, possibly not most—but many) companies is making use of any skill set at all, besides self-aggrandizement and bullshitting.

To be charitable, for some of these, what's happening is that rather than leveraging their skills, they're leveraging their relationships. And that can be valuable, sometimes, but it's not a substitute for actually knowing what the hell you're doing.

The real problem is that far too many of these people—skills or no skills—primarily bring their egos to the table, and operate mostly based on that.