In this month's Seattle Magazine, Knute Berger states in his Gray Matters: Just Say None article:

Newspaper and magazine columnist (and founder of Microsoft’s Slate magazine) Michael Kinsley says that Ayn Rand is popular at Microsoft. She was an atheist who originated the philosophy of Objectivism and touted the virtues of selfishness and dog-eat-dog competition. No wonder she’s the darling of Redmond’s chosen.

This certainly applies to me, although I don't ask, "What would Ayn Rand do?.  Rather, I ask, "What would John Galt do?"

Interestingly enough, I also consider myself a Buddhist and those are not contradictory at all (check your premises).

Lastly, John Galt ≈ Zarathustra (at least to me) which is another reason that I am fan of Ayn Rand.

BTW: if you are fan of Atlas Shrugged, you should really check out the perfect union of John Galt & Ragnar Danneskjold in the character of Hagbard Celine within the Illiminatus! Trilogy.