I think far from destroying the music business, he put it on a path to redemption,” said Tom Freston, former head of Viacom and MTV. “With the iPod and iTunes, Steve not only created his own ecosystem, it turned out to be one that was contagious and created opportunities not only for his computer business, but for all the Apple products that came behind it.”

Mr. Jobs was initially pegged as a technologist who didn’t understand the media and entertainment businesses, but his track record as an operator is pretty enviable. In 1986, he bought the company which would become Pixar from George Lucas for $5 million and invested $5 million more.