The article suggests we may not have figured out how to properly measure IT productivity growth.
Another possibility (my guess, no research to support it) is that we really have experienced a reduction in productivity growth. Corporations are doing very well post-recession, labor is not. I say and think this over and over again: corporations have figured out how to take a larger share from productivity than labor has.
At some point, labor has to wonder "why should I?"
Skip to about 1:00 if you like. https://www.youtube.com/watch?v=_iiOEQOtBlQ
