The implication of what you're saying is silly. Yes, making a marginal copy of the latest Star Wars film is nearly zero. However, the first instance cost $275,000,000 to create. We split the cost across each unit because if we didn't, the movie wouldn't exist, because nobody would buy the first unit.
You are getting too caught up on the fact that some things have low marginal costs to produce that you're entirely neglecting that overhead costs are a thing that also exist.
Even for something like Linux, there are gigantic overhead costs. The vast majority of Linux commits are made by people sitting at their paid job. Those lines of code are not free, they are financed by the companies who are willing to pay Intel/IBM/RedHat etc for their products and services.
You are getting too caught up on the fact that some things have low marginal costs to produce that you're entirely neglecting that overhead costs are a thing that also exist.
Even for something like Linux, there are gigantic overhead costs. The vast majority of Linux commits are made by people sitting at their paid job. Those lines of code are not free, they are financed by the companies who are willing to pay Intel/IBM/RedHat etc for their products and services.