There's definitely a ton of work in them and they're widely used, but I'm pretty sure that a relatively basic AI-assisted framework could recreate most of these apps with hardly any actual coding

Any shop that's not incompetent switched to using frameworks for that stuff 10-20 years ago, so there's hopefully very little work left there for the AI.

Even at a company where it's a massive amount, that company "benefitting" from AI, really just managed to defer their "use a framework" savings 20 years late.