@emmadavidson I like to consider the question in terms of David Graeber's "Bullshit Jobs" hypothesis. It's not actually the "work" which is valuable enough to pay people for. A great many jobs are a from of "human ballast", especially the jobs AI can replace. If we really wanted to abolish those jobs, we could do that without AI. But we don't, and even if the lurid fantasies of the tech bros come true, one assumes there will still have to be jobs for people to occupy. Even if those employees do nothing productive, they can give a company influence and consideration when the government makes policies and sets regulations.
I think a part of it is that AI is meant to bring about a transfer of power, similar to the way social media transferred power from local entities to silicone valley. There are countless other examples: tourism, accommodation, classified ads, bookselling, the record industry etc., where local control has been transferred to the likes of Amazon, google and spotify.
AI is about dehumanisation, it's a sort of coup against human agency at all levels. But it is also a way of weakening the influence of institutions, be they governments, or local groups who lose control of their communications media. Their power is transferred to the tech bros, who call their novel form of tyranny "libertarianism".