Ask YC: Is Amazon Eating Sun's Lunch?

Seriously. I haven't heard so much as a peep out of the startup world regarding Sun's grid computing services (network.com). Back when Jonathan Schwartz was launching the thing in 2004, it sounded promising.

Crap, it's been 4 years already? Is anyone using Sun? Or is EC2 (still in beta, mind you!) eating Sun's lunch?