I've worked for quite a few major companies now, and the one thing that always gets me is the top brass always think they have magical intuition about people. That's how they justify it, both to themselves and to others based on what I see. The ones they're promoting are the ones they think are just smart enough to keep the wheels running. What they actually are are just straight up idiots who are very good at taking credit, and deflecting blame, and have no other notable talent. And then they just keep failing upward, leaving a wake of failure that is always someone else's fault or "valuable lessons" that didn't have to be learned the hard way if they were actually capable of thinking critically.

These people don't "Fake it 'till they make it" they just fake it, and keep faking it, because they have no idea what they're doing, but they're a much more successful predator than their peers as they cannibalize the company from within. And then these parasites make it to the boardroom and any chance to slow them down vanishes. I've seen it play out exactly like that a dozen times, at promising startups, and venerable old-guard corporations, Fortune 500s and corner stores.