I have always wondered about most common tools. How much should maintainer of say bash be paid per install? Or per use? Or per month a system runs? What about a

I have always wondered about most common tools. How much should maintainer of say bash be paid per install? Or per use? Or per month a system runs? What about all other core tools or common tools? Even most of things in say Linux? Surely those are much more important and more deserving than any service or whatever you run on them? You can't install that software without them. Or does these payments end somewhere? So money does not end up with those who wrote and now maintain them?