Those who are in Galt's Gulch are there by invitation only. Dagny crashed the gate, but was clearly still on the future invite list. However, I find it interesting who got invited to Galt's Gulch and why. The obvious invitees are the high-performing titans of industry such as Hank Rearden, Dagny, Ellis Wyatt, and Ken Danagger.
But the more-surprising invitees include the following:
- the young brakeman of the Comet
- the nameless writer -- "fishwife" in the valley (possibly an autobiographical insertion)
- the young woman who owned the bakery shop and her two sons
- Kay Ludlow (the actress)
None of these were industrialists nor titans of industry. Though, we can safely assume that they were ideologically sound, which is to say they believed in meritocracy, capitalism, objective reality, etc. But if ideology is the only criterion, then is Rand suggesting that the few hundred people who lived in the valley were the ONLY people on earth with that ideology? Seems doubtful. Were they just lucky to have been discovered by one of the agents or a member of the valley? An elite few who had the right ideas and were lucky enough to know someone in Galt's secret network?