It is free to the person that receives it.
Imagine I bake and give you a cake, it's still a "free cake" even though I've put the work into baking it and other people have put the work into harvesting the ingredients and bringing them to me.
Imagine I bake and give you a cake, it's still a "free cake" even though I've put the work into baking it and other people have put the work into harvesting the ingredients and bringing them to me.