I have found that her work has become a bit like the Bible: you can find a way to justify a lot of what you want to believe, and then you can discard the rest. Most of the Rand-lovers I know vote for Republicans and some vote for Democrats. Some (or all) of those votes must conflict with Objectivism, since so many of the parties' policies are opposite.
> Instead, the utopia in the book is one in which people voluntarily associate to form a society.
This is why I believe that governments should obsessively do two things: A) protect the rights and opportunities of children, who can't enter a social contract; and B) pay the costs of someone exiting the social contract.
For example, I believe the US government should offer people the cost to travel to any other country once. They would revoke their citizenship and their right to live in the US permanently.
After that, we can more honestly say that citizens have entered into the social contract and may be held to it.