I know a few young keyboard players in my area doing the odd solo when not doing band work. They pretty much all use clip launch things like MPC’s, or go with multitrack backing audio, sometimes a combination of both, and sometimes a looper thrown in for good measure. As far as I know, I don’t know anyone under 60 playing an arranger any more. 🥲

I think in my area (where vacationers are the primary monetary engine) there are more young keyboard players in bands than solo work. Personally, I think that’s a good thing. You learn your craft playing with others and then maybe apply it to solo work afterwards. It’s pretty easy to tell if a player has next to no band experience!