The expectation, at this point, is that defense will only occur if you are an elite insider. An unknown user may or may not be such an elite, and thus may or may not get defense.
Surely you aren't going to make such a statement without examples! I can think of examples where things were attacked, including some of the largest value destructions, and insider status didn't help. For example, the multisig thing that happened to Gav Wood (the second time).
If your lone example is the Dao attack, that looked like successful governance to me.
I wasn't sure what you were referring to, but it looks like maybe https://cointelegraph.com/news/parity-multisig-wallet-hacked...
The astounding, insane decision to use "libraries" aka delegate call in any immutable smart contract always boggled my mind. The amount of space saved is so ludicrously small as to beggar belief. Hope the 10k or whatever worth of space savings (about 20 transactions worth) was worth it.
Anyway, he didn't get a roll back, and the $200m in value that disappeared didn't either.
Yes indeed. There are a number of very interesting game-theoretic feedback loops built into bitcoin that enhance security. This is one of them.