But they still make great stuff like Korg Volca FM or Dirtywave M8 and many, many other beautiful synths!

Apart from that, with music equipment, it's completely different than with computers. In our case, great hardware becomes outdated and goes out of use. You could say it disappears forever because its time has passed. With music equipment, it's entirely different. There, everything remains compatible, almost nothing "goes out of use" and it cannot become obsolete.