[DarylZero]

The cooperative model requires people to coordinate on choosing the same human authority figure.

Blockchain only requires people to coordinate on choosing the same programmatic criteria for block validity (and then choosing the longest valid chain).

[bombcar]

Which practically ends up the same - see the Etherium fork/rollback.

One potential use maybe would be a blockchain that is openly run by a company (80+% of nodes or something) but if you also run a note it could continue after the company ceases to be.

There are other ways to do that but it might almost be a reasonable use case.

[DarylZero]

You can point to that event but it's actually not enough to establish that it "practically ends up the same."

[stransky]

You can ignore the event, but the trust we’re to put in the blockchain is based on a promise that such an event can’t happen, but it did.

[DarylZero]

Not really. The old chain even still exists.

Also, Ethereum is different from a real blockchain.