Places crypto has been used isn't evidence that it was the only thing possible to have been used, which is the question -- what does PoW-consensus blockchain le

Places crypto has been used isn't evidence that it was the only thing possible to have been used, which is the question -- what does PoW-consensus blockchain ledger make possible that isn't possible without it? It's not a matter of what they've been better than status-quo broken finance systems. The question is "if we replace these broken systems with something, why does it have to be a blockchain using PoW for consensus?" In many of the cases people use crypto because otherwise they'd have had to been a bank or a money transmitter or file with SEC and uphold their legal obligations as such, and in those cases using blockchain didn't make those obligations disappear. In other cases, the hype around "blockchain" created solutions that could have been served by any form of digital currency or any form of distributed database -- not just this specific form.