One of the key messages of Ayn Rand's book Atlas Shrugged is that you should go on strike and not share your achievements with the world since they will be used against you anyway. People vilify achievements and value mediocrity?
The best term I've come across to describe Rand's activities in relation to philosophy is public philosopher. From WP:
Some public philosophers are academic professionals, such as Cornel West, Jürgen Habermas, Martha Nussbaum, Richard Rorty, James Tully, Jack Russell Weinstein , but others may work outside of the usual academic contexts of teaching and writing for peer-reviewed journals such as social activist Jane Addams and novelist Ayn Rand.
That obviously puts Rand in a pickle because on the one hand, she recognized the phenomenon of what I often call "the conspiracy of mediocrity" wherein people who often see beyond the contours of their immediate milieu are indeed confronted and sabotaged by those who are afraid, jealous, and petty towards those who are more individual with their intellect and accomplishment. But on the other hand, what good is having good thoughts and writing novels if no one reads them? Thus, on the face, their seems to be a contradiction.
That being said, Objectivism, which is a better-thought-out position on contemporary libertarianism than the sort embraced by preppers and right-wing extremists is an intellectual rather than visceral credo that does have a currency with libertarian-leaning (mainly US) intellectuals in the same way that Austrian economics does. If one has the same sort of disposition to resist communal and communist thinking (which was obviously a more threatening political reality when she was alive then today for intellectuals), then one would need to know that others are also resistant to the overarching demands to identify with some collectivist political identity.
Thus, Rand, who was clearly no idiot, was walking a fine line between "going on strike" and sharing her achievements with the world because she was attempting to share her achievements, not with the "world", but rather like minded-intellectuals. In fact, what you need to understand is that "going on strike" is a metaphor, and it makes sense in the context that she had little hope in society, certainly many people, and had a distrust of government. Thus, "going on strike" is not a call to asceticism as you seem to be suggesting, but rather a call to skepticism, specifically in relying on others. In this way, Rand was and will always be thoroughly entrenched in the American Myth of Rugged Individualism. (Myth here invoking the sense of over-arching narrative or element of worldview rather than critique of the values it represents.)