Thank you, sir. This thread is a product of Fi being an intrinsic motivator that can weigh values. In this context, we are weighing the values of altruism and selfishness in a way that is detached from a normal definition.
Once Ayn Rand changed her subjective value of altruism, she felt free to cultivate her own ethical system which she felt was more beneficial. However, it was mostly just beneficial to her and other like-minded people. Note that Rand was an INTJ.
People of other orientations will probably find that this philosophy does not resonate with them because their brand of altruism doesn't stem from the same individualistic source. Still, there will be like-minded people, like myself, who understand that these kinds of philosophies cannot be applied to all people, and so I take them with a grain of salt.