One thing is for sure LLMs will bring down down the cost of software per some unit and increase the volume.
But..cost = revenue. What is a cost to one party is a revenue to another party. The revenue is what pays salaries.
So when software costs go down the revenues will go down too. When revenues go down lay offs will happen, salary cuts will happen.
This is not fictional. Markets already reacted to this and many software service companies took a hit.
But my take on this is that accountability will still be a purely human factor. It still is. I recently let go of a contractor who was hired to run our projects as a Scrum/PM, and his tickets were so bad (there were tickets with 3 words in them, one ticket was in the current sprint, that was blocked by a ticket deep in the backlog, basic stuff). When I confronted him about them, he said the AI generated them.
So I told him that:
1. That's not an excuse, his job is to verify what it generated and ensure it's still good.
2. That actually makes it look WORSE, that not only did he do nearly 0 work, that he didn't even check the most basic outputs. And I'm not anti-AI, I expressly said that we should absolutely use AI tools to accelerate our work. But that's not what happened here.
So you won't get to say (at least I think for another few years) "my AI was at fault" – you are ultimately responsible, not your tools. So people will still want to delegate those things down the chain. But ultimately they'll have to delegate to fewer people.