I mean - if we just look to 3 other Canadian champions - who are actually fine examples because I truly believe they were all exceptionally hard workers, determined and competitive, you can see it is not that easy. I would say they all had what you said was needed "single-minded focus and unbelievable drive."
I know the reasons are complicated but Kurt Browning and Elvis Stojko were not able to peak at the Olympics and it is arguable that Jeff Buttle peaked at 2008 Worlds instead of the 2006 Olympics or the 2010 Olympics 2 years earlier or 2 years later. I am sure that, given the choice, they would have liked to have peaked , been uninjured - maintained the fire for competition etc to have won gold at the Olympics - but they did not. And they are really good examples because each of them was capable of being the best in the world - just not during the Olympics.