February 4, 1997: Apple Buys NeXT
Take a large software company and tell it to create a new OS from scratch and you are in serious trouble. At this point most people will think of the constant delays of Windows Vista, but in reality it was Apple who couldn't create a new operating system no matter how much money was thrown at the project.
Copland, the code name for the all-new operating system, was the penultimate example of vaporware. Apple would promise one time frame and then fail to meet it time and time again. Out of desperation Apple tried to put a positive spin on Copland by announcing that the new system would ship piecemeal. Unfortunately, one tenth of something nonexistent is still zero, so Apple was forced to look outside for a new operating system.
The winner of the sweepstakes for Apple's next OS was, surprisingly, NeXT. The reasons given for the choice were varied; some maintained it was because Microsoft refused to develop for an OS based on Be computer technology, while others opined it was an obvious attempt to get Steve Jobs to rejoin Apple. Speculation aside, it was February 4, 1997 when Apple consummated the deal to purchase NeXT Computers.

Comments
Obviously you are forgetting the handful of OSs that Microsoft failed to deliver.
Cairo?
It must be fun writing articles out of historical context.
Who cares? This is called Apple Matters, it’s a story about Apple buying Next. You don’t actually have to connect every single chuffing story to Microsoft.
It wasn’t written out of historical contect, Cairo isn’t relevant to the story.
Now stop being silly and go and annoy someone else.
nice good.