One reason may be that happy people share their good fortune with their friends and family (for example, by being pragmatically helpful or financially generous).
The Achaemenid emperors, vanquishers of the Babylonians in 539BC, spoke Persian as their native language, but pragmatically adopted Aramaic as the world’s first “interlingua”.
In this case they are more likely to choose a "lean" implementation method that can spread responsibilities for individual problems pragmatically across the team.
