You need to check your dates.

MacOS’s fundamental look has a pretty consistent chain all the way back to NextOS in the 90s. The Dock, the dot indicator, and many other core pieces are visible in versions of MacOS which predate the launch of webOS. MacOS borrows some bits from webOS as well, but the fundamental Dock layout is right out of NextStep.

I didn't mention any dates, and I believe it doesn't need to be the one who came first to inspire others ;)

Well what I meant to say is they were both inspired by the OS I'm going to release next year.