Apple merging MacOS with NextOS to make a Unix OS was the best move they could make at the time. It happened during the time of the $10,000 Unix workstation and

Apple merging MacOS with NextOS to make a Unix OS was the best move they could make at the time. It happened during the time of the $10,000 Unix workstation and Apple made OSX as an easier to use Unix. It was cheaper to buy a Macintosh than it was to buy a SparcStation or some other Unix workstation. Because of Apple making OSX Unix based, it cut into sales of other Unix companies like SGI, and also GNU/Linux cut into sales of SGI and others as well. But making OSX Unix based solved a lot of problems that Classic MacOS had that they couldn't solve.