The Iranian software is in practice of no other use, as Word is the most common word processor program and .doc files are easily shared with and usable by other people. It would mean paying additional money for nothing. The Iranian software is used mostly by publishers.

As to the feature of my interest, which you argued "It is only an 'important editing option' to you and, perhaps, a very few others", you may be right, but please note that all nations are Microsoft's audience, and typing Persian poems in their most desirable format can be important for any Persian-speaking person and a useful, pleasant feature in many contexts.
Anyway, I thank you for your contribution, I found it educational.