Hardware that runs DOS well isn’t that hard to find though. There’s even new modern-ish motherboards designed for embedded systems (like robots that control production lines) that still have ISA and PCI slots to support legacy hardware, since those embedded systems are designed to last a very long time.
For what it’s worth, I know that some places that run old systems like that have virtualized it - they have much newer systems and run the old software in a VM.
Hardware that runs DOS well isn’t that hard to find though. There’s even new modern-ish motherboards designed for embedded systems (like robots that control production lines) that still have ISA and PCI slots to support legacy hardware, since those embedded systems are designed to last a very long time.
For what it’s worth, I know that some places that run old systems like that have virtualized it - they have much newer systems and run the old software in a VM.