the other reason, cited in the wired article that it seems this was based from here http://www.wired.com/wiredenterprise/2012/03/mr-linux/ http://www.wired.com/

the other reason, cited in the wired article that it seems this was based from here http://www.wired.com/wiredenterprise/2012/03/mr-linux/ http://www.wired.com/wiredenterprise/2012/03/mr-linux/, is that Linus also didn't like the Mach kernel. The relevant paragraphs are here: "Torvalds has never met Bill Gates, but around 2000, when he was still working at Transmeta, he met Steve Jobs. Jobs invited him to Apple’s Cupertino campus and tried to hire him. “Unix for the biggest user base: that was the pitch,” says Torvalds. The condition: He’d have to drop Linux development. “He wanted me to work at Apple doing non-Linux things,” he said. That was a non-starter for Torvalds. Besides, he hated Mac OS’s Mach kernel. “I said no,” Torvalds remembers."