One of my professors says, "Yes! Because artifacts of high culture are so readily available everywhere these days."
However, I think this is another example of shallow-mindedness on her part...sort of like that time that she told me that she genuinely believes being black(er) means being ugly--when she herself is proud of the tan that she has cultivated on her own skin.
Let's face it: Even young people know the difference between high culture and popular culture, though they may not know the definitions of the terms. Frankenstein the novel? High culture. Frankenstein the James Whale film? Popular culture. Throw out any number of examples and you'll undoubtedly get a very quick response. Just because I can get a nicely-bound hardcover copy of many classic novels cheap from Barnes & Noble or Borders--or full-text copies completely free online--doesn't mean that their cultural value decreases. (Somewhat as an aside, though; I've heard the theory that, these days, what marks you as rich isn't about what commodities you own. Cheap manufacturing in China means that even poor shmucks like me can have a cellphone. Rather, it's about what *services* you can afford? Do you fly first-class? Do you get full-body massages every week? Do you have a housekeeper, a nanny, a private chef? Do you eat at the most expensive restaurants? However, the fact that everyone can read Mary Shelley doesn't make it "popular culture," though perhaps the simple fact of reading it no longer means automatically that one is privileged.)
Still, access does change things. Things that were once a small subculture now enter into the mainstream culture. Take hip-hop or street fashion, for example. Or even science fiction. :P But going mainstream doesn't mean transitioning from low culture to high culture. I dare you to tell me that M. C. Hammer's music is "high culture." If anything, it just means that more things become widely-acknowledged examples of popular culture, starting careers and industries that would not have otherwise existed. Subculture and mainstream culture are blurring, but that emphatically does not mean that high and low culture are too.