This could just as easily be suggesting that "overproduction" of elites is due to, some two decades prior, a creeping sense among the populace of nascent but growing inequality and increased stratification? Or put differently, "Grandpa worked in the plant and made a good life for himself, and I work in the plant and make a good life for my family too, but I see the writing on the all and am going to make certain that my son or daughter becomes a [lawyer/banker/software person/etc]". And the instability today is just that initial rising inequality reaching fruition.
Something like that seems much more likely to me, that creeping change exists that is palpable at the individual level, and expressed through the emphasis given to the next generation.