These fictional works are crystallizations of her values. They show what is possible for man, man at his best. Objectivism claims to be a rational approach to the world. But the world is a complex place, and human society is a complex system. Like all complex systems, societies evolve to reach a stable dynamic right at the border between order and chaos.
Reason can somewhat handle the orderly part, but fails when things slip over to the chaotic.
Even in the orderly part, there are way too many variables to be rationally handled. If you insist on arguing without proof that there are things reason can't handle, I sure would like to here your unreasonable method for dealing with them. While a free market is the best way we have yet found to deal with the overwhelming complexity of an economy, experience has taught us that some regulation is needed to keep that market from plunging into chaos. An ideology driven attempt to remove that regulation could be disastrous. A reading of history indicates that when people are allowed to accumulate wealth without any regard for their fellows, the result is tyranny.