Perhaps *nix could claim a version of Samuel Clemens' oft-misquoted statement:
"I can understand perfectly how the report of my illness got about, I have even heard on good authority that I was dead. BSD, a cousin of mine, was seriously ill two or three decades ago in Berkeley, but is well now. The report of my illness grew out of his illness. The report of my death was an exaggeration." - *nix
(You could sub in SCO and Linux there if you'd like)
As others have said, Apple has at least at one time earned certification and paid for the right to use the Unix(TM) trademark; macOS can be called Unix(TM). BSD code is everywhere, including the original Windows TCP/IP stack.
Out of the top six operating systems as referenced in
https://en.wikipedia.org/wiki/Usage_share_of_operating_systems five are *nix-style systems and the sixth, Windows, has the option to act like a *nix-style system. It needs to, since the *nix-style systems have such an overwhelming majority across all end user operating systems.
The sheer portability of the basic *nix design is how Apple was able to rather quickly transition from PowerPC to Intel, from 32-bit to 64-bit, and then to Apple silicon both with the iPhone/iPad and the Apple silicon Macs. Same with ChromeOS and Android, but with the Linux kernel. Cisco runs a Linux kernel on several router platforms. And of course FreeBSD is the base for several popular firewall systems running mostly on Intel/AMD hardware. NetBSD will even still run on a VAX. The biggest cornerstone of what became known as "The Unix Philosophy" is platform portability; perhaps the Next Big Thing in platforms will be RISC-V, and the *nix ecosystem is ready.
Does anyone else remember how 'fun' running a non-Intel Windows system was? (I still have NT 4 and a Win2000 beta for DEC Alpha here....). Or for that matter, how fun running WindowsXP 64-bit was: had a Dell Precision 690 at $dayjob that ran it; there were all sorts of 'minor' incompatibilities, mostly thanks to the AMD 64-bit system as reimplemented by Intel on the Xeons in the 690, and the need for compatibility layers such as WoW and WoW64 and legacy programs that still used 16-bit code... (mostly installers as I recall, but I reserve the right to be wrong...InstallShield rings a bell, but it wasn't alone.). x86_64, it must be remembered, was originally a non-Intel architecture.....and Debian, at least, honors that, by calling it AMD64.
I haven't tried Windows on ARM or the historical IA-64, PowerPC, or MIPS ports, so can't comment about those.
But ARM chips are eating Intel's lunch in all spaces except the traditional desktop PC, and Apple silicon is making inroads there. Thus Windows on ARM 32 and 64-bit.
Perhaps a similar video on the rise of Windows and the seeds of its fall should be done? (And perhaps that sentence belongs in Humor...but I would vote one of the seeds being Microsoft's seeming narcissism - the Daffy Duck style OS saying "It's mine it's mine it's all mine you can't have any it's all mine!").
