We are in such different universes that I fear that this will not be a productive discussion; to my eyes LLMs are the most obviously socially transformative technology in my lifetime, up there with "internet" and "smartphones".
You say the largest niche is software production. Okay, let's talk about that. If the jury is still out then the jury is asleep. When ChatGPT first came out - the GPT3 days, years ago, before "vibe code" was even a term - an artist friend of mine who never wrote a line of code in his life straight-up vibe coded 3d visuals to accompany a performance of the band he was in. In Processing, which he'd never heard of until ChatGPT suggested it to him. Do you realize what this means? Normies can use computers now. Actually use, not just consume. You can describe what you want and the computer will do it - will even ask you for clarification if your specification is too ambiguous. Hell, it will even educate you about the subject matter, meeting you at exactly your level, in your favorite writing style.
If you are still thinking in terms of whether vibe coded software is "copyrightable" or whether LLMs are useful for "selling software", you are a blacksmith scoffing that cars are pointless because they don't need horseshoes. Your entire framework is obsolete.
You are so focused on productivity that you missed the boat on the shape of the problem.
Vibe coded app are just throwaway codes that you don't understand and can't maintain. Most of our technology isn't creating new things but incremental improvement.
You are so focused on productivity when programming 's bottleneck is never about how many features you implement but how much you can understand your codebase.
Nobody cares about your internet slops but they care about verification of facts which unfortunately require human judgement.
LLM are just a different version of library code we already have, except without quality control by default.