The first scenario reminds me of the 2023 LessWrong story "A Disneyland without Children":

https://www.lesswrong.com/posts/pk9mofif2jWbc6Tv3/fiction-a-...

It's a dynamic we already see to an extent in reality, where impersonal hypercapitalist systems and captured institutions prioritize policies that cater to the ultrawealthy and large corporations at the expense of regular people. This specific scenario of LLM-powered robots becoming laborers and politicians feels far-fetched, but the underlying idea of the omnicidal singularity being a blind, abstract economic force rather than a superintelligent villain is pretty compelling.