That graph is fascinating. The decreasing value of formal higher education to becoming a successful entrepreneur is being accelerated from so many angles. The cost of collegiate education itself has risen dramatically, while at the same time the cost of access to collegiate educational materials has plunged to zero due to the internet and open publishing. If this trend continues, I wonder if motivated, aspiring entrepreneurs will be better off skipping formal higher education altogether. Could that already be true today? If someone can decide that the college path is not for them at a young enough age with a high enough level of maturity, then they can unschool and skip the bull-shit college-admittance optimization altogether, and instead focus on actually becoming an educated, masterful individual in domains that will help them create new value that they, and society, care about.
Of course, there's so many confounding factors feeding into this one simple graph that I may have over-extrapolated to this particular thrust, but I think it's a perspective completely absent from the article that should be articulated.