That ......plus it's only the very very wealthy that can afford these instruments and very few people have the skills to utilise its features . That's a bad combination for a top price product .
Not really
Most organs are bought by those over 50 (A couple of generations ago it would have been over 40 due to a better economic climate) where the kids have flown the nest, the mortgage is almost finished, and they now have surplus cash and time, so they look into a new hobby (Or restarting an old one that was put on hold when the mortgage and kids came along) to pass the time.
The prices of organs have remained fairly constant for decades (taking inflation into account) with them just becoming more advanced as technology has improved.
You are correct about they can be too sophisticated, (Which is where Lowrey score as they make them easier to play then an arranger, but still allow the player to progress to more advanced playing) which is why the Wersi Sonic OAX range has an easy mode to allow players to get on-board, (Even arranger players could transition fairly easily) and worry about the more advanced features later. (There are many organ groups out there, which like the Yamaha & Korg arranger groups help each other out)
Arrangers are good, but they are no substitute for playing things yourself, (Extra keys & pedals) as the style based system just becomes boring after a time. (They also get in the way of more advanced playing; hence a lot of players (Home & Pro) add extra keys & pedals to their arrangers)
Bill