I liked the piece but my take is a bit different since I practically make a living by doing negotiations primarily by email. (Email is perfect it allows you to remove facial expressions and tone of voice which can be a drawback if not perfectly executed. Not to mention having to think on your feet and not be able to do what I describe below).
One thing that I do do is to very very carefully choose my words and analyze and interpret the words of others to divine meaning and hidden meaning. [1]
As such I simply don't believe that Jobs just fired these emails off I can almost assure you that as much effort went into this as goes into writing a Presidential speech or a chapter in a novel or a scene in a movie.
I do that, it works for me quite well, so I can't believe that at this level it isn't being done and I am somehow unique.
While it's entirely possible that Jobs wrote this on the fly more than likely it was a much thought out or even team effort where every thing was discussed and considered or Jobs perseverated.
I did like the format and you should definitely do more of this.
[1] A small example is this statement "Maybe I’m missing something, but I don’t see any other alternatives. Do you?"
The addition of the "do you?" and the "Maybe "I'm" is critical in that sentence. Without both the emotion on the part of the recipient is much different and would be more negative and consequently less likely to come to an agreement.