Here's an alternative view.

Is Yamaha greatly to blame for the demise of the Arranger market and it's clear and obvious decline compared to the work they and others do on Workstations.

They obviously built the Tyros 4 (and previous models) with the older gentleman in mind which is why they are so easy to operate, and equally as popular with people in this age bracket. The flip side to that however is the clear lack of interest from younger generations, and the clear and obvious decline of the Arranger market overall.

(My next comment is not a pi$$ing contest... just an alternative view.)

KORG on the other hand are the only ones trying to do the complete opposite. Their Arranger keyboards are just as technically advanced as their Workstations in many ways and are aimed at a very broad spectrum of users young and old. They also adapt their products to certain markets which is why Eastern music is pretty much entirely dominated by KORG Arrangers at this point.

It's only food for though guys. Don't take anything I'm saying too serious.

Regards
James