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.
Want de vader -- een van de vaders van de industriële revolutie, Adam Smith -- was ervan overtuigd dat mensen van nature lui waren, en niets zouden doen tenzij je ze zou belonen voor hun moeite en dat deed je door ze te stimuleren, door ze te belonen.