In Atlas Shrugged, John Galt invented a radical new engine and (according to folklore) emigrated to Atlantis to keep his invention out of the hands of parasites.
Charles Stross’s novel Neptune’s Brood is about uncovering the true history of the Atlantis colony, which gathered an unusual concentration of talent before suddenly going silent. Some say that Atlantis was working on a FTL drive, which happens to be a motif in a perennial scam. Was Atlantis never more than a Potemkin village, bait for investors? Or, on the other extreme, was it destroyed because the FTL project succeeded?
Once or twice before, I’ve asked Charlie whether he intended an allusion and he said “ha, no, I didn’t notice that,” so I won’t assume that the name “Atlantis” (which is unrelated to the Neptune of the title) is a poke at Rand. It’s funny either way.