It's really interesting to watch Google ramp up their apps to get ready for Chrome OS later this year. It really seems like they want to be ready to answer a lot of objections before the machines are released.
This is a smart move by Google. Hopefully, they will take this model and apply it to an apps marketplace for consumers so that anyone with a Gmail account can add third party apps to their Google account.
Me-too-soft will have to follow up with their own enterprise app marketplace now. But it will suck because they can't execute. My money is on Google dominating this battle.
Fortunately this is a complex space with plenty of room for competition and complementary services.