Tolkien and Rand were talking about different evils, so the struggles they wrote about were entirely different. I'm not sure what Tolkien thought of altruism, but Rand thought it was destroying the world. And I'm not sure what Tolkien thought about individualism, but Rand thought it was the antidote to the world's problems. So these are two very different works, by very different authors, with very different messages.
not COMPLETELY different.
The Scouring of the Shire shows, in micro, what Tolkien was getting at with his story. It wasn't really the unshakeable evil of the orc that was the threat, it was the evil of men who wished to ruin and hold sway over others, but for no other reason than they deem themselves superior. Saruman was an example of this. THe RIng but a symbol of the corruption of power, ESPECIALLY absolute power.
Also look at how socialist "Sharky" and his band of thugs had made the Shire, when before it was a place damn near without authority(except a ceremonial Mayor and the shiriffs) and where a hobbit had his own wealth and enjoyed a good smoke and a good meal. Sharky turned it into a socialist heaven, with machines not so much representing technology, but representing Saruman(or any evil one) and his will to dominate and corrupt and destroy.
For Rand, perhaps she worshipped a kind of power, but it was not the power over other men. On this, Tolkien and Rand would have agreed.