On the surface it would appear that one of the things that most attracted me to Yamaha in the first place is about to be outlawed. Bob Gelman's Style Forum is very active with members who share EVERYTHING YAMAHA. This forum is also comprised of members willing to share operating and performance tips that might be considered "trade secrets"...but the end result is that none of us gets hurt by sharing...and, in fact, makes our presence and our performing abilities even stronger. I find it hard to believe Yamaha has lost keyboard sales to style swappers.
Perhaps Yamaha Corp will provide a more detailed explanation which will prevent some kind of public relations disaster for them.
Just one more thought: This particular forum with its ingenious and generous members has picked up a lot of slack left by Yamaha manuals that are lacking.
Eddie