Citation from MS Legal (or exec Level) making this claim, I have never heard that in my 20+ years in IT
OEM License, legally, is tied to the Mainboard of the system (and some components of the MainBoard), that is the HardwareID MS uses to activate and record the activation.
the OEM SLIC is embedded in the BIOS/UEFI of major systems since Vista days, and I believe it was mandated for all OEM since Windows 8
There are virtually no systems today that ship with a physical restore media, and consumers are advised to make one themselves
So I would love to see someone from MS legal making this claim (which has no legal foundation)