Well, because we develop more value than structural engineers faster than they do and have killed far fewer people than they have. Essentially, we’re economically more efficient so a 10% improvement in our performance is huge, while a 10% improvement in structural engineer performance is a waste of time for the cost incurred.
Therefore, software engineers get a lot more attention in terms of how to increase efficiency. The difference is akin to why there’s so much work to get CEOs to be more efficient but not that much work to get janitors to be efficient. It’s not a value judgment. It’s just economical reality.