Actually, one could make a strong case (and Allan Bloom DID make a strong case, in The Closing of the American Mind) that Nietzsche’s ideas have WON in the United States, just as they have elsewhere. That a kind of nihilism is pretty much par for the course in America, as it is elsewhere.
The difference is, Americans embraced a wimpy, watered down version of what Nietzsche said.
When Nietzsche proclaimed, “God is dead,” he MEANT it to be a terrifying proposition. After all, if your whole society, your whole culture, your whole sense of morality were built on Christianity, then the collapse of belief in God SHOULD mean chaos and panic and a complete redefinition of everything you ever believed.
In America, though, that didn’t happen. If anything, people took the “news” of God’s demise rather nonchalantly. The result was not chaos or even a serious re-evaluation of our society. Rather, the result was a casual relativism. “Oh, God doesn’t exist? Well, that’s okay. All that means is, I do my thing, you do your thing, and I’m Okay, You’re Okay, and who’s to say what’s right and wrong? Lah dee dah!”
Thing is, even if the USA is, on paper, the most religious Western society, you’ll find that most self-proclaimed American Christians are namby-pamby relativists, too. They’ve pretty much bought into the notion that… well, not that God is dead, but that He doesn’t really matter very much, that He doesn’t really care what we believe or how we live, and that, if there’s a Heaven, almost everyone will get into it. (Sort of “God isn’t dead, but he’s not at all well… and while we’ll miss him a bit, we won’t let it get us down if He’s gone. Because, really, isn’t it more important to be nice than to be good?"”)
Faith in America is a mile wide, but an inch deep. Right about where Europe was when Nietzsche first started writing.