That's true for Bitcoin because it's almost impossible to get most miners and nodes to agree to reversing such a mistake, it's completely against the spirit of

That's true for Bitcoin because it's almost impossible to get most miners and nodes to agree to reversing such a mistake, it's completely against the spirit of the project. But in the example above that could still be easily fixed, you'd just need the companies involved to agree to reverse the mistake, as they are the miners of the chain.