Matthew Yglesias at Vox.
UPDATE: A different take from Henry Farrell: "I would furthermore speculate (and this is speculation, but, I think, grounded speculation) that these tendencies towards skew are going to be substantially accentuated by increased wealth inequality, as very rich people compete over a tiny pool of premier artistic prestige goods, dramatically driving up the prices for this pool and this pool alone, while leaving the middle and the tail of the distribution to languish and stagnate."
