Yeah, and the MiniDisc was the only one that could have come close. Sony already had computer MiniDisc readers/writers, mass production with pre-recorded content, (fairly) large volumes.
They just never connected these things to each other. It could have been a great standard and we would have been plagued to this day with them. :)
In some ways it's even better than USB flash. There are no read-only flash drives, for instance. It's also a problem that you mosh "data" in the same port you mosh "keyboard" or "spy device". We gained a lot with the USB paradigm but we lost some things, too.
MiniDisk! I loved that format. Great physical size. I suspect my love is all about nostalgia for the future, because when they came out they were foreign (at least in the US) and fly.