I don't think they (Yamaha) actually "took down" any other arrangers, but I'm pretty sure that Roland is out of it entirely, unless you count the VIMA instruments.

Roland's drop out was mainly self-inflicted by poor marketing, and therefore there wasn't enough arranger profits to finance R&D for new features.

I think Korg is very much still in the game.

You getting another Korg?

Ian