That said, a large percentage of IE9 users are corporations which don't want to support non-Microsoft browsers, new end-users who don't have a clue about anything that's not Microsoft, and the millions of foreigners who just use what's provided.
Supporting IE9 isn't that bad as it used to be to support older IE browsers.
Funny thing to say after seeing the statcounter shown in the comments show that >40% of north americans use internet explorer compared to ~30% in europe 35% in asia, 30% in south america and 30% in africa. Infact North america is the only place where internet explorer has >5% lead over their next biggest rival!
http://gs.statcounter.com/#browser-af-monthly-201102-201202
http://gs.statcounter.com/#browser-as-monthly-201102-201202
http://gs.statcounter.com/#browser-eu-monthly-201102-201202
Perhaps they didn't "win" the battle fairly, but back when IE market share was in the 90%+ range, I think it was fair to say Netscape had unequivocally lost.
Mozilla/Firefox was a "Hail Mary" plan that only succeeded because a lot of smart people and a lot of money showed up at just the right time. I shudder to think what the web would be like had they failed.
It was IE4 the one that beat the then bloated Netscape Communicator 4.