The Elf wrote:"These days, it’s difficult for current Japanese companies to create the types of synths that I used to develop"
In the case of Korg, that’s not entirely fair:
Monotron (++)
Monotribe
Volca Keys
Volca Bass
Volca FM
Volca....
Monologue
Minilogue
Prologue
MS20 variants
Odyssey
A couple are re-hashes, but it was Korg who proved that was even possible. They led the way, Behringer followed.