> That's because actual malice IS rare. Corporations are not filled with evil people,

Corporations don't have to be filled with evil people for malice to be rampant. All it takes is for one person in a position of power or influence who is highly motivated to screw over other human beings to create a whole lot of malice. We can all think of examples of public officials or powerful individuals who have made it their business to spread misery to countless others. Give them a few like-minded deputies and the havoc they wreak can be incalculable.

As for Hitler, if we can't even agree that orchestrating and facilitating the death of millions of innocent people is malicious, then malice has no meaning.

C. S. Lewis has written a great many excellent things, but his quote there strikes me as self-satisfied sophistry. Ask people being carpet bombed or blockade and starved if they're grateful that at least their adversary isn't trying to help them.