Me neither. In 1997, Apple bought NeXT to get Jobs back. In the bargain they acquired NeXTSTEP, which was, by then, a mature and robust OS. Once Jobs was back in charge at Apple, he deemed classic MacOS unsalvageable, and decided to move the Mac to NeXTSTEP - an OS they already owned and which he was obviously familiar with. It took a few years to build what would be known as Cocoa and Carbon, and eventually OSX. Linux was never even in the picture.