<real-world-gripes>
What if your product is creating giant networked ovens for Nabisco assembly lines?
What if the product is an Enterprise Firewall Spam Detector IDS Bad Guy Defeater Gateway Proxy with more feature check boxes than atoms in the human body and the PM (who is a PMP, obviously) has a BA in English with a minor in interpretive dance?
What if the product is a series of experimental HIV vaccines?
Not every product in the world is a consumer webapp.
</real-world-gripes>