Good things, works of art, survive. Those LOLCats will still be there in the future, sure, and some people may even appreciate them. But for those who don't, filtering out the "simple" stuff shouldn't be an issue.
The music I've been listening to all day has been produced by people who love what they're doing. They don't want your money. For them, it's enough that you take time and listen to their music. That's why they distribute it for free. And I can tell you that out of the things created by teenagers today, there are things I will appreciate just as much, or even more, in 50 years. That's more than enough to make them art to me.