I do hate the obsolescence - in my case it's 100% the device vendor's fault. Had some great Firewire interfaces, they worked fine in Mojave, but when that went

I do hate the obsolescence - in my case it's 100% the device vendor's fault. Had some great Firewire interfaces, they worked fine in Mojave, but when that went out of support I couldn't keep it back because I use it as a work machine so I really need to keep on top of security updates. (I still do have an install on an external drive for messing about but it's a lot of friction to jump back into that). As far as I can tell, literally all the vendor would need to do is re-compile the drivers and sign them. But they just say "Sorry, it's end of life so we won't bother". So my perfectly functional hardware doesn't work on any recent Mac OS or Windows versions anymore...