Sort of like how the medieval world relied on a small class of aristocratic landowners who loved riding fast horses and killing each other, the postmodern world relies on a small class of people from all walks of life who will work much harder than usual to make more money than they need, operating large enterprises to solve various material problems of other people that they don't really need to be solving, paying tax on those enterprises that they could otherwise avoid if the were not working so much.
Sort of like how the medieval world relied on a small class of aristocratic landowners who loved riding fast horses and killing each other, the postmodern world relies on a small class of people from all walks of life who will work much harder than usual to make more money than they need, operating large enterprises to solve various material problems of other people that they don't really need to be solving, paying tax on those enterprises that they could otherwise avoid if the were not working so much.