Part of the issue is that there is "no cost" to changing something in the software stack, while there are very tangible costs and barrier to entry to modifying

Part of the issue is that there is "no cost" to changing something in the software stack, while there are very tangible costs and barrier to entry to modifying a physical structure. This tends towards a more conservative culture, where controls are placed on designs and changes. This culture also exists in safety-critical software, like that used in medical devices, aviation, and industrial automation. Otherwise, robustness is relatively expensive because it requires the organization to value the long-term quality and function of the system, at the expense of short-term velocity and malleability. If you are competing with others who can hack together an MVP with 90% functionality overnight, then waiting for the engineered product may be problematic.