When my friend mentioned that I was just in town from SF for the weekend, she asked what I did and after telling her, her reaction was something along the lines of 'oh you're like a real grown up!' Her tone was one of embarrassment and a begrudging acceptance of where she was, and it's one I've seen a fair bit despite going to a pretty solid school. Not Ivy League, mind you, but a reasonably high-ranked state school.
I really have no idea what the solution is, but I've thought a fair bit about the as of yet unrealized ripple effects: Many of these people are in debt up to their eyeballs. Given that, they're going to be much less likely to (or at least will significantly delay) purchases of cars and real estate. Dating is a lot harder when you're living at your parents', and I'm sure we'll see an impact in the ratio of singles/families among my generation as a result. Then there's the whole psychological impact of feeling they have nothing going for them that the article focuses on. Pretty dismal scene.
[1] Honestly, I hate this term. It shouldn't be any surprise to us that when we promote an 'everyone goes to college!' culture a la 'everyone's a home owner!', coupled with an insidious lowering of standards in our education system starting in the lower rungs of K-12, we'll have a mass of college-educated individuals who can't find gainful employment.