This remember me about the Prost and Senna relationship. It is impressive how much we lost when our biggest 'rival' pass away.
When Senna died, Prost stated that "a part of himself had died also", because their careers had been so bound together.[40] Senna had also felt the same when Prost had retired at the end of 1993, when he admitted to a close friend that he had realised how much of his motivation had come from fighting with Prost.
I really am uncertain if they saw each others as rivals personally. Both the businesses achieved scale and has different vision. Think Mr.Jobs' joke about them being secretly married is perhaps more closer to reality.
When Senna died, Prost stated that "a part of himself had died also", because their careers had been so bound together.[40] Senna had also felt the same when Prost had retired at the end of 1993, when he admitted to a close friend that he had realised how much of his motivation had come from fighting with Prost.
http://en.wikipedia.org/wiki/Alain_Prost#Rivalry_with_Ayrton...