Arranger use by professionals is small, (It always has been) and will probably continue in this vain with minimal change, due to the fact that probably 99% of arrangers go into the home.
Bill
Actually in Holland, there are quite a lot of gigging musicians using arrangers..
Mostly those playing dutch and schlager music, which is still a considerable part of performing musicians.. In germany and Austria, its even more that use arrangers on stage...
Still a considerable amount, altough considerably less then a decade ago..
The problem is with the youngsters, they either refuse to invest huge amounts of time for gathering player skills and just go daw, deejay and small analogue synth..
Or they go for guitar... or straight piano... both combined with singing.. how strange it sounds, areangers are way to compkicated for them. And a piano player does not require a full backing but can perform okay with just a simple drum beat... knowing this, it only seems logical for Yamaha to morph their high end workstation and arrangers into a single instrument.
If nothing happens, arranger keyboards (as well as synth workstation) will soon belongbto the past in Holland... they will be alive as long as old timers keep playing and buying them..
Keep in mind tough that Asia and south east asia are totally different markets where areanger keyboards are still very popular with young and old...