In a post-scarcity society (which we're technically in now, if we took this seriously), Communism is a more appropriate model of governance than Capitalism. It would ensure a more equitable distribution of resources, incentivize stronger environmental policies to minimize waste, and drive technological innovation towards preservation (of truly scarce resources - rare elements, for instance) over extraction.
The problem is that humans desire power for themselves and the humiliation of others, which results in every method of governance becoming corrupted over time, especially if it doesn't see regular change to address its weaknesses (as we see now with neoliberal societies resisting populism on both extremes of the political scale). Combined with centuries of nationstates lumbering onwards and fighting for their own survival in an increasingly nebulous and ever-shifting digital landscape, and no wonder things are a tinderbox.
All that being said, Communism is an (maybe not the, but an) appropriate choice for a post-scarcity, post-AGI society. It's something we need to discuss in earnest now, and start dismantling Capitalism where feasible to lay the foundation for what comes next. As others (myself included) have pointed out repeatedly, this is likely the last warning we'll get before AGI arrives. It's highly unlikely LLMs and current technology will give rise to AGI, but it's almost a certainty that we'll see actual glimmers of AGI within the next fifty years - and once that genie is out of the bottle, we'll be "locked in" to whatever society we've created for ourselves, until and unless we leave our planet behind and can experiment with our own alternatives at scale.
Good craftsmen know when they've reached the limits of their current tooling. We need to recognize that Capitalism is the wrong tool for an AGI era if we value our humanity.