I have 11 keyboards in my studio. I don't recall that I ever heard from any of them after point of sale.
My 2 current axes are KN7000 Technics. I have received by mail on floppies two updates for that board from the Factory Rep.
The Yamaha PSR9000 has received one download update.
Technics, as you know has closed their keyboard business.
PSR9000 is now obsolete though not even broken in yet.
This brings up the point of total cost of a keyboard.
The first cost of 3000.00 is just that. Now add on the depreciation, insert boards, Out of warranty costs, hard drives, etc. I have 4000.00 keyboards in here that are now worth 100.00 on a good day. What was the real cost? Then there is the analog recording gear and the depreciation on all that.
I think at my age these keyboards will be the last I buy and they will prolly last as long as I want to continue playing.
After Sales service is what you get when you but from a small mom and pop company, not a large corporation.
Just my passing thoughts.
Bebop