You're totally missing my point, which is that all of those costs are abstract and protracted. They aren't felt as you're literally typing the characters; they

You're totally missing my point, which is that all of those costs are abstract and protracted. They aren't felt as you're literally typing the characters; they can't be listed as concrete numbers in a budget. If an engineer is using a CAD tool and they add a part, they can see the space that's no longer available for other parts. Or they can see that the product would have to be made physically larger to accommodate it. There is concrete feedback to contend with during the development process, not just a vague notion of future reliability.