That's a fairly erroneous statement. American "culture" as far as cultures go is a recent phenomena. Are you saying it's because of so-called American influence in the world? Or because English seems to be the dominant language of business? The foundation of a country's "culture" is it's language. I don't see that changing anywhere, especially those countries where tribalism is a normal way of interacting within the culture.
And what is American culture anyway? Fast food, instant gratification, disrespectful children, voracious consumerism, pseudo Christianity, high crime and incarceration rates, racism, corporate and political dishonesty, the almighty dollar, no consideration toward Mother Earth, the "we're number one syndrome," etc. etc.
Having said that, I believe there's hope for America when it begins to respect and practice the premise that everything is interconnected, regardless of geography, language or culture.