The sound generated by a Stradivarius can be equaled if not exceeded, but the emotion, the pleasure, the satisfaction of playing an instrument built by a great luthier, or play an organ of the '700, or a grand piano with high quality mechanics cannot to be simulated in any way. It is a little like the return to the vinyl record ... the quality of the CD, unchanged over time, is indisputable, but the sound and emotion of an analog reproduction (with merits and defects) of the "old" LP, played on a turntable of the latest generation, is unmatched.
What I foresee is a future keyboard that will reproduce even more faithfully the sounds of instruments, and their nuances with an SA3, will same as the original, Genos 2 could have a number of even more realistic "styles revo", fill in more complex, as happened with the drums revo. But there will always be young people fascinated by an organ, a guitar, a sax and so on, the "Classic" instruments will never fade ... so it has been for centuries and so it will be tomorrow.
For Whom, for profession or for pure personal pleasure, love to play a keyboard and entertain public or friends there will always and always will there be, keyboards for all budgets with many additional functions for increasingly impressive performances.
Pietro (alias Nostradamus LoL)