One idea that I have thought about since initially researching into this disorder, was that narcissists are often in positions of power or are successful in society. One of the places I heard this was through Vaknin's videos. Who, supposedly being a narc, is probably speaking from a delusional standpoint anyway.
I've come to the belief now, that the reality about the disorder is that narcs are NOT successful in life, they most likely do NOT rise to many positions of power, in or out of the workplace, do NOT become presidents or very influential.
It is truly a hard disorder to hide, because of the sensitivity towards criticism. When a person, innocently or otherwise, contradicts the narcs view of reality, the rage comes out and exposes the narc quickly. It would be virtually impossible for a narc to undergo the constant public battery that, say, a politician undergoes while rising to power and especially while in it.
In interpersonal relationships, the narc only draws insecure people towards them for any long period of time, because only an insecure person is willing to listen to the self-absorbed talk of a narc, and is susceptible to their usually obvious charms.
To everyone else, with their own healthy ego, the narc is a waste of time, a joke, someone to avoid. And I would say most narcs ARE avoided by people looking for close relationships, because they can not offer it. They are only good for a fun time at a party, or someone who really wants to be superficially charmed.
The thing is, the narc never knows they are not popular with people because very few people confront them, so to any NEW people, they seem so confident and successful, until once you look closer at their personal life and realize they are a complete joke.
The only people scared of narcs are those who are co-narcs, who still have a tendency to put others needs above their own.
Once you learn how to put your needs first, narcs are far from threatening, they are laughable in their delusions! Of course someone who is inexperienced in the world could still get sucked into a relationship if they didn't do their research first, but all it takes is looking at the consistency of their words and their real life to see through it. Once you stay with someone who obviously is self-absorbed, and this comes out eventually, you are choosing that situation, which makes you an enabler.
These are my new evolved thoughts after having gone through a long period of self-pity and feeling victimized, to now a point where I confidently look after my own interests, and now have little fear of being taken advantage of.