There are some universes where old software or hardware is still heavily used or valuable. One area where I dabble is electronic music. Sure there are lots of new things, but a 50 year old guitar is still a viable instrument, so why not a 30 year old synthesizer? So in this universe, some people go to great lengths to maintain software that supports these instruments. I have a Yamaha VL1. Released in the mid 90s, it was Yamaha’s flagship “tech preview” for waveguide physical modeling software. You could play the instrument and tweak some very basic parameters without a computer, but if you want to actually edit the modeling, you need the “expert editor” which requires MacOS System 7 and a direct serial MIDI port or Apples long gone “midi manager” software. I keep an old 68k laptop around for that purpose alone.
Korg released an audio DSP playground in a PCI card called the OasysPCI which never got OSX drivers, so I have a MDD PPC Mac to run that. There are probably better things running natively today, hey instruments are things that shouldn’t be obsoleted, since they all have their own sound. Most of the rest of the ancient software I run is run under Wine (which worked quite well up to Mojave, but became difficult when Apple killed 32 bit support) because Microsoft has done better at retaining backwards compatibility. So now I have a laptop permanently stuck on Mojave.
Korg released an audio DSP playground in a PCI card called the OasysPCI which never got OSX drivers, so I have a MDD PPC Mac to run that. There are probably better things running natively today, hey instruments are things that shouldn’t be obsoleted, since they all have their own sound. Most of the rest of the ancient software I run is run under Wine (which worked quite well up to Mojave, but became difficult when Apple killed 32 bit support) because Microsoft has done better at retaining backwards compatibility. So now I have a laptop permanently stuck on Mojave.