But that is not the point. The monetary/opportunity cost is always compensated, someone is doing it for the greater good, someone for their ego and someone is payed money to do it because it just make economical sense... Freedom on the philosophical level (forced or not forced based on the license) is what matters.
P. S.: Check the herd of FreeBSD maintainers and committers Netflix is keeping...
What does that change about my argument?
Everything, "There's no such thing as a free lunch" means exactly what it says—nothing is free, at most it can be included with other service, but there is a cost. The lunch is physical and didn't materialized from thin air.
But free software can be used, replicated, reused, modified, sold, etc. because the original author allowed it. It has nothing to do with the cost and everything with the concept of freedom of ideas.
So it is not free as in lunch or beer but free as in speech or ideas.
