It's definitely not an easy place to live. My understanding is that even in a best case scenario where everything you need turns out to be theoretically availab

It's definitely not an easy place to live. My understanding is that even in a best case scenario where everything you need turns out to be theoretically available, you'll need a bunch of currently-speculative industrial processes to extract it at scale. I'm not convinced it's intractable, though, especially with a few more decades of progress in industrial automation.