Because the father -- one of the fathers of the Industrial Revolution, Adam Smith -- was convinced that human beings were by their very natures lazy, and wouldn't do anything unless you made it worth their while, and the way you made it worth their while was by incentivizing, by giving them rewards.
Perché il padre, uno dei padri della Rivoluzione Industriale, Adam Smith, era convinto che gli esseri umani fossero per natura pigri e non facessero niente a meno che non fosse data loro una ragione, e il modo per dare loro una ragione era dare loro un incentivo, dare loro delle ricompense.