None the less, "capital" and "AI" are extremely different in scope and I see no particular reason to think that if "let's do X with capital" turns out to be a bad idea then we can rely on "let's do X with AI" also being a bad idea. In a hypothetical future where the benefits of AI are so enormous that the rest of the economy can be ignored, perhaps the two kinda coalesce (though I'm not sure it's entirely clear), but that hypothetical future is also one so different from the past that past failures of "let's do X with capital" aren't necessarily a good indication of similar future failure.

And that stack of decade-old manga is a resource that might indeed provide value (in the form of continuing enjoyment) to a manga collector. That makes it capital. A $20 bill in my wallet is ultimately a claim on real resources that the central bank commits to honoring, by preserving the value of the currency - that makes it "capital" from a strictly individual perspective (indeed, such claims are often called "financial capital"), although it's indeed not real "capital" in an economy-wide sense (because any such claim must be offset by a corresponding liability).