It must be scary having a company so dependent on one creative mind. But how would Apple look today if they tried not to depend on Jobs so much? My guess- much smaller, much less significant.
http://www.apple.com/pr/library/2015/01/27Apple-Reports-Reco...
Steve Jobs' personality and drive created Apple and then saved it by having the executive power to focus the brand away from the various iterations of computers to get to one idea: Beautiful products that people want.