This is the country that has spawned the richest people on the planet, many of them from very lowly backgrounds. The most influential web sites on the planet came from the United States. The greatest TV shows I've seen were all but one American, and the one - The Office - managed to at least win Ricky Gervais an Emmy once he brought it over here. Ditto greatest movies. In almost every field, America has got at least a distinctive presence. So obviously some people are escaping the stupid, impoverished culture.
I think that in Atlas Rand does abandon villains, but I feel that's because she's relying on her readers to have read The Fountainhead so we can already understand their justifications. In that earlier book, she spends a lot of time treating her villains with sympathy. She tries to explain why they are what they are. And while I agree that she does simplify in Atlas, I've absolutely met people who have similar mindsets to the villains from The Fountainhead - she's not just making up that type of person, and they often are as vile and as insignificant as she paints them to be.