If you think Apple hardware is overpriced now, imagine if they didn't have any competition from Sony, Dell, HP, Acer, etc.
Back to your argument. Lets see:
http://www.nytimes.com/2011/06/02/technology/02google.html?p...
>She highlighted a fake document titled “Draft US-China Joint Statement” that was circulated among people with e-mail accounts at the State Department, the Defense Department, the Defense Intelligence Agency and Gmail. Clicking to download the document directed users instead to a fake Gmail log-in page that captured their passwords.
So that attack wouldn't have worked if the user was on an iPad or Droid or a Macbook Air or running the most hardened Linux computer. Right?
Zero days have been found in every browser/OS combo around. It's hard to see how OS X would fare better in a very targeted attack as Safari/OS X is usually one of the first to fall in PWN2OWN where the reward is a Macbook (not a win in a World War).
Stop getting your news only from places like Boyocott Novell, Groklaw,Slashdot, HN and the comments there. It warps your mind.