Buyers of art are paying for artistry. The product is the art itself, or something closely related. Buyers of software are paying for working productive machine

Buyers of art are paying for artistry. The product is the art itself, or something closely related. Buyers of software are paying for working productive machines with inputs and outputs, same as a train or a tractor, but which happen to be virtual. Sometimes it takes artistry to build machines, but it's an incidental input, not the product. People who design a ship don't usually expect a cut of the cargo it carries, no matter how much more effective their artistry made it. As someone else points out, a company which owns IP or rents out capability (like a SaaS) might be a closer analog to artists getting royalties.