[adjkant]

They are in location X and it has been written into code that there is no way to ever remove them from X. The only difference between throwing this "money" into a black hole and this is that you can see what's in this black hole once it's in there, even if you cannot remove it.

The only way to ever fix this is to rewrite the history of the blockchain which means forking the entire ETH currency by getting all mining/record nodes to agree to it.

Long story short: Virtually unrecoverable without large coordination from the entire ETH community.

[RomanAlexander]

It's a possibility if your name is Vitalik Buterin

[sanderjd]

Hard to say but my guess is that no, even he can no longer pull this off. I think he used his one freebie.

[pvaldes]

So all that is needed is forcing a bunch of people to do something. Not much different than forcing a lot of people to do to war, so not impossible.

Lets imagine, hypothetically, that some mafia boss, big company, users would create a lobby, the "platform of people affected by Ethereum" that would lobby to force a fork for a fee. Lets say 50% percentage of your lost money if we are successful, that is still much better deal than having no money at all. And then would use some tool to convince/coerce/bully everybody to restore it or just would mess with the process to force it. Would be this possible or a probable outcome after enough amount of time has passed?