Is that what that was? I thought it was just a bunch of kids gone nuts in a candy store, presided over by a Walt Disney/Howard Hughes type A overfed capitalist pig. And of course, even then, those themes only came through in terribly implemented audio tape logs, which broke up the generic Doomlike gameplay in the worst way.
No, it also came through in the entire setting of the game and the names of the characters (Andrew Ryan - Ayn Rand, Frank Fontaine - The Fountainhead, Atlas - Atlas Shrugged), parts of the story mirror Rand's Atlas Shrugged and The Fountainhead ("Who is Atlas?" - "Who is John Galt?", Ryan wanting to destroy Rapture - Howard Roark bombing his housing project), etc.
And that's just the tip of the iceberg...
I think you spend too much time on wikipedia. None of those similarities would come across to someone who was not either a Rand fanatic, or who exhaustively searches out explanations to every game they play.
I am reminded of a young second year sociology student who told me he was writing a paper examining the film Alien from the "feminist perspective", specifically looking at it as a "critique of male sexuality". I just about hurled. Sometimes, a cigar is just a cigar, and a generic Doomlike by an overachieving, pretentious designer is just a Doomlike.