Except you can't do a web search on proprietary code within your business, and hosting AI on-premises to model your codebase would likely be a huge waste of mon

Except you can't do a web search on proprietary code within your business, and hosting AI on-premises to model your codebase would likely be a huge waste of money and slower than just telling a real life person what you want. There has been zero-progress towards AI comprehension, so you can only get out of it what you are already familiar with. The human must always do the mental heavy lifting to tease out a good result, or indeed even know if it's a good result and not just a hallucinated mess.