As everybody keeps pointing out and demonstrating, what percentage of arranger users are NOT 'home' players, or professional players that play the same kind of music (basically, non-electronica, acoustic music of a generally 'classic' nature )...?

Precious few.

I just don't understand why Dom keeps missing this basic fact. It's not as if the MS COULDN'T be a great arranger (in the sense that most of us here understand an arranger to be), but it would take the development of a ROM style and sound selection better than they have chosen (and a few well placed OS improvements). This having been addressed, the MS would be a major contender. Ketron, at least, understand that, although you can have at least PARTS of their OS 'open' (the live loops), you can't HOPE to make it in the marketplace without a great library of ROM styles. I mean, what would persuade ANYONE to buy an Audya if all they did was enable the audio drums feature, but left it to YOU to provide all the loops? But they, at least, are not that dumb! They make a cracking library for it, and it is a very popular (if expensive) keyboard.

How come Dom never gets this? Why sell to a tiny handful of either VERY dedicated dance music producer/techheads, and a few more gullible dreamers that don't equate really poor demos with a really poor playing experience, and think that voicing and styling a hi-tech arranger is going to be a piece of cake (best of luck! )..?

When you COULD sell to the entire market by the simple (comparatively, compared to designing and building the thing) addition of high quality OOTB content. That's all Ketron have done. Doesn't Dom WANT to sell a boatload of MS's?