Yeah, so what. Without servants, assistants and toadies they’ll try and boss one another till they kill each other. I’ll take my chances with the apocalypse.
And with servants, assistants, and toadies, they'll run the risk of being overrun in a inside revolt.
One of the books in the Jerry Ahern series "The Survivalist" dealt with just such a scenario. When a post-apocalypsian bunker is opened, it turns out that the current "rulers" are descendants of hired help who revolted and took over the bunker.