I think the outcomes are very hard to predict, it depends a lot on both economical factors, technological factors (how much will LLMs still improve beyond benchmaxxing), societal factors, etc.
It's like the early internet where there was the whole gamut of opinions between 'its a nothingburger' to 'it's the democratic town square of the world'. In the end, it was neither.
Whoever gets it right will be called a visionary, but realistically nobody had a clue.
Counterpoint: reducing most of these metastatic organizations to 2-pizza level teams with AI would be positive across the board.
Countercounterpoint: But since the overlords of these fiefdoms are not stupid, just malevolent, they'll use AI to tighten their grip and terrorize anyone who dare oppose them. Basically, organizational Ponzi.
replacement would not happen overnight but they would decrease the amount of jobs required
back then we need a team of 4 - 10 engineer for an project/app, now maybe we need 2-3 max