Windows already does, so you’re talking about the BSDs or Darwin?
Windows probably has not many (or any) drivers ported from Linux.
OpenBSD doesn't 'rely' on Linux drivers, thanks. Just a shim against KMS/DRM, everything else it's either homegroup or sometimes adapted (back and forth) from NetBSD but OFC patched for correctness and security. There's no ALSA. Pulse it's totally optional. There's no wpa_supplicant except for Eduroam or simlar niche crap under OpenBSD.
OpenBSD has OSS and sndiod. There's Xenocara, an X11 fork. Again, not Linux, X11, MESA and Gallium are damn generic. Show me the rest of ported Linux drivers into OpenBSD, please.
Are you sure OpenBSD is that dependant GNU/Linux?