We have devices in the field running DOS. Industrial machines. Mostly written in C, but some in PASCAL. My colleague did FORTRAN when he started.
So many young devs don't even realize their modern CPU still has x86 real mode. That essentially they're still running an 8086 scaled to unbelievable levels.
I've seen some really encouraging stuff online with young devs going back and learning assembly, hacking hardware, and really getting to know how their machines work. I just hope it's enough. I'm willing to bet money there's parts of Windows that hasn't been touched in 30+ years. Three fragility of it all bothers me. Especially when you still work in systems programming and you see the cracks.