Diki has hit the nail on the head, (I have also said this many times over the years) just think about it, there used to be a boatload of home organs manufactures in the heyday, but are now down to a few, the same happened to arrangers in that most manufactures pulled out of the market, and we are left with just a few. (New releases are also few and far between)
If you look at a lot of electronic equipment most of it becomes obsolete pretty quickly, whereas acoustic instruments don't, and that unfortunately is life.

Bill