It is true that the narrative elements of the game are heavily influenced by Objectivism as @peerless suggests. Arguably, the narrative is a critique of Objectivism, or at least, "It's about what happens when ideals meet reality."
it was hard
for people to understand exactly what I meant by "utopia." I didn't
mean a place where everyone holds hands. [...] They started
building a hospital, and I said, "No no no, it has to be thirty
competing businesses, really crass advertisement." [...]
There's no central administration. Everything's
about competing businesses.
The game is full of "crass advertising" that is often totally unveiled propaganda for the point of view of the particular faction.
Though "man" is often used for "mankind," the singular "man" in this particular case is intentional and reflects a sort of militant Individualism that the underwater utopia was built upon (the Ryan faction).