1) developers are not fungible. 2) things that are created are not the same , otherwise it would just be reused. 3) to understand how to build on the system you must learn the domain it is built on, which is also not fungible knowledge.

You are fundamentally building items , not reproducing them in software. A factory reproduces the same items.

There is a crisis in industry where legal contracts and business forecasts do not align with what is reasonable and predictable for software development .