Jobs wasn't the great innovator eveyone makes him out to be....he didn't invent the mac, ipod, ipad etc
Jobs was infamous for stealing/borrowing great ideas from others:
Mac --- Xerox PARC
iPod - -- Tony Fadell invented it and brought it to Apple
iPhone - agglomeration of many ideas already on the market
iPad ---- agglomeration of many existing technologies
Hence, Apple is in no great danger without Jobs and innovation is really taking what was done or being done and assembling it into something new that people never knew they needed --- all great inventors say that they stand on the shoulders of giants (those who've innovated things in the past).