Every cow is different that does not prevent them from being treated as a commodity. &quot;In economics, a commodity is a marketable item produced to satisfy wants or needs. <i>Often the item is fungible.</i> Economic commodities comprise goods <i>and services.</i> <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Commodity" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Commodity</a><p>Staff ex:Nurses are generally treated as a commodity in many economic models.<p>Music&#x2F;Books&#x2F;Movies can also be treated like this.  Sure, as a consumer I might pick A over B, but movie theaters don&#x27;t individually price movies based on quality.