Tape and VM?
If you need to read old tapes, the drive may not work on a VM.
Transfer the tapes now to HDD stored off line or new format tapes, depending on size.
VM may not exist for other old platforms.
The old CPU HW may be for other hardware I/O. Little other than high level ports and networking is available on VM. By definition a VM is unlikely to be able to access strange I/O or HW.
This is a pointless article. We all know what a VM can do and advantages of it.
Explaining what the limitations of VM / Virtualisation are might be more useful.