In economic terms productivity usually means GDP per capita or per work hour. The article implies the everyday meaning of the word. Besides: As the common job

In economic terms productivity usually means GDP per capita or per work hour. The article implies the everyday meaning of the word. Besides: As the common job of IT is automation, e.g. reducing the need for labor, increased (everyday meaning) productivity of IT could actually result in lower (economic) productivity, as GDP gets smaller.