DAO failed, but it controls about 15% of the total ether supply, so it was too big to fail, and the fork will save it.
Ethereum failed, as they decided smart contracts aren't a great idea, so they're now going to involve humans when they feel like it. The whole premise of Ethereum was the opposite of what they're doing.
In practice they found out (and showed the public) the kind of consequences everyone was expecting; and so we have a successful experiment giving some evidence on whether smart contracts w/o overrides are a good idea - apparently, it's not; and now based on this we can build better systems that properly account for the risks that DAO had.