In most of those examples, there is still an underlying labor cost.
For example, with the truck driver delivering the load - yes you are right that his labor costs are a small part of the delivery charge. Other costs include the fuel, and paying for the usage of the truck. So we have to look at the cost of those items, and guess what? There is labor included in those. Refining oil has a labor cost. Drilling oil has a labor cost. Making the equipment to drill oil and refine oil has a labor cost.
While at any stage, the labor cost is fairly minimal, it is there at every stage, and it is an accumulating percentage of the cost at any level.
In the end, the vast majority of the cost of any goods are labor. Sure there are some costs that are not associated with labor (real estate rental, for example). But most things boil down to labor at the end of the line.