I think it's as simple as that Yamaha and other companies have to follow the 'mainstream', or better,
be a bit more ahead if they have any intention to keep up at the top level in the future.
I would not be surprised if arrangers goes the same fast run downhill as the homeorgans did,
but there will be new and other solutions to take over.
The arrangerpeople of today is not youngsters, so sadly, the nature will reduce the nowadays fanclub pretty fast ...