The email complains at poor sales of Office, which it attributes to a lack of focus on making such sales among reps at that time. It describes dumping development of the product as: “The strongest bargaining point we have, as doing so will do a great deal of harm to Apple immediately.”
I must have underestimated the usage of Mac Office. If it’s enough to even remotely maim Apple, then it must have a large user base. The small article goes on to mention that the documents prove Microsoft used the Mac version of Office to test new features, since any mishaps would affect only a few people.
Source: Mac World