I feel like this article conflates individual cost/opportunity with economy-wide cost/opportunity and then comes to a very wrong and dangerous conclusion.
-The individual case: First, the average graduate with a bachelors earns $50k and the average HS graduate earns $30k (1). So, let's take the worst case scenario, namely that you decided to go out of state without any financial aid. Your opportunity cost is $120k and your out of pocket expenditure is going to be roughly $160k for a total of $280k, which will take 14 years to amortize. I personally came out of college with $4k in debt, and worked p/t and in the summer to pay for rent and food (probably $10k/yr), which I would have had to pay for anyway, so if we adjust the opportunity cost accordingly, that's $80k + $4k = $84k which will take me 4 years to bring to parity. Not to mention, I'll probably enjoy the college educated work quite a bit more. Further, the opportunity cost issue doesn't take into account the fact that I got to spend four years studying abroad, partying with gorgeous coeds, etc.
-The economy-wide case: The key point to note here is that educated workers contribution to the economy is vastly greater than just their salary. If you work at Apple, your work is worth $1.3 million per year (2), and if you work at Matrixx Initiatives your work is worth $3.4 million per year (3). Now, let's say that the $500k figure is accurate. If you're a Matrixx Initiatives employee, in just one year, you justify the entire education of seven people. Of course it's all way more complicated than that: these employees probably have more than bachelors, if they'd started work at six or seven years old in a factory, they would have an extra fifteen or so years of income, etc., but if everyone went to the factories instead of school, our economy would probably look more like Vietnam's.
1. http://www.earnmydegree.com/online-education/learning-center...
2. http://primitus.com/blog/revenue-per-employee-in-china-vs-us...
3. http://money.cnn.com/magazines/fsb/fsb100/2006/top_performer...