Financial leverage: It is cheap to write code, experiments are inexpensive. A million dollars in funding for a B2B SaaS gives many more shots on goal vs a million dollars in funding for drug research or manufacturing. This increases probability of ROI and permits aggressive investment.
Operational leverage: Scaling code is cheap as well. It is free to copy. Solving one problem with software well often enables solving immediately adjacent problems very cheaply.
Do LLMs decrease or increase the leverage here?
Writing code is cheaper, a single engineer can now do much more. Does that endanger engineers? Yes, if their job is "take requirements and implement to spec". No, if their job is "solve important business problems at scale". The former are already typically not valued or paid exceptionally highly. The latter are likely to be valued and paid even more than they already are.
Or put another way, if software engineers are going to be hurt by LLMs who is going to benefit? This is assuming a zero sum game which I would disagree with here. But if not software engineers than who is better positioned to wield LLMs effectively?