Not to mention that Ethereum has shown willingness to hard fork to punish/reward specific actors.
If an actor pulled off a 51% attack on Ethereum I'd be surprised if there wasn't an effort to just hard fork them out of their resources.
If an actor pulled off a 51% attack on Ethereum I'd be surprised if there wasn't an effort to just hard fork them out of their resources.
Without losing their stake to slashing penalties, though, the worst kind of attack 66% (not 51% iirc) can do anyways is a censorship or denial of service attack. Which is bad, but at least they can't revert transactions or double-spend like in a PoW model.