Culture is always such a fluid thing, I think it's hard to pin down what's really happening. The Internet has simply allowed
memes to travel faster, and that has made traditional ways of measuring trends and counter-culture somewhat obsolete. Like you said, with YouTube, stuff can spread virally. What used to take years and a sturdy fan base to "hit it big" can now happen overnight... with the right mind-worm.
I was "coming of age" in the early '90's, and even though I wasn't all that with it as a kid (some things never do change) I saw the way the music industry turned underground into a mass-production venture; R.E.M. was
way underground for years, but they had fans all over, publishing their fan-zines and keeping up interest. Then they got "discovered" and suddenly, everyone who wanted to be seen as hip and "alternative" was latching on to them. Suddently, all of the new bands had to have jangly guitars, sexually ambiguous singers, and an effete detachment from "the Scene." The independent labels in Seattle saw how R.E.M.'s fans had been the key to building them up into a top-selling act, so they started pumping money into 'zines, and developing the "underground scene". And much of what they came up with was just as boring and uninspired as the hair-metal, white soul, or disco crap that had come before it.
Now, it's a pattern you see everywhere. We can't find a decent spaghetti sauce, because every time a new brand comes along that actually uses real ingredients and doesn't add sugar or preservatives, they get bought up by a Kraft subsidiary. Then, Kraft (or whoever) "improves" the product, "streamlines" marketing, and turns the formerly good sauce into more of their bland pap. All in the name of "mass appeal". Coca-cola bought up three successive juice companies that I really liked, and turned their products into colored sugar-water.
Of course, you can't blame people for wanting to sell out and make it big. But that just means that you end up pressing your own juice; or making your own sauce; or forming your own band... or starting your own science fiction podcast. Which may eventually get bought up by Time/Warner/Kraft/Halliburton/BAE... is that bad?
