"Today that hardware evolution is slowing down, so it's normal that the sounds don't change that much."It's not just the hardware.
Stravinsky's Rite of Spring could have been composed hundreds of years ago on basically the same instruments, but it wasn't. Nothing remotely like it was.
Twelve tone music, Dada music, all sort of other types of music could have been composed hundreds of years earlier, but it wasn't.
It's not just hardware and technical capabilities that evolve, but musical tastes, ambitions, and understandings of what music is and could be.
Similar things happen in other arts. The Black Square[1] painting could have been painted at any time. But tens of thousands of years passed before anyone did it.
Art is constantly evolving, and the boundaries of what is considered art and what people appreciate as art is ever growing.
[1] - https://en.wikipedia.org/wiki/Black_Square_(painting)