Wrong - Vendor Lock-In
"Good on them for taking the fight to Chrome, Opera, Safari and the increasingly wayward Firefox but guys, c'mon, you're not going to make your next $Billion making people love your browser in 2010."
Don't be an idiot. The new all-signing all-dancing browser ONLY runs on their latest proprietary platforms. Not so much Platform 9 as 1.5 Platforms.
By selling the browser *hard*, and that includes all the fanfare that standards-wise it's "better" than the competition, they hope to get more converts to the questionable OS it runs in.