In the spirit of philosophizing, as a language and value-enriching activity, I encourage us to consider what we sell in 'services'? (Including the management of products).
It seems that most of it are to do with cause and effect. With a particular input, your business system will render an output. It is curious because we might turn around the next moment and talk about the unexpectedness of the world.
Services seem to be wavering on both sides of this line between action and outcome.
While I appreciate that we all need to foresee a result for our activity, it is abundantly clear that the most expensive engagements stretch that line to a place where value could be discussed or even questioned.
If I could leave a prompt here, how might we render value without such an implicit promise?