Amazon is not greedy, it's capitalism, man.
Companies, that do business in cloud just have leverage to offset costs partially to the client.
Our company is planning to discuss this at coming Cloud Computing Conference 2009, keep tuned - http://www.cloudslam09.com/
Our company is planning to present Nvidia based GPGPU solution at Cloud Computing Conference 2009, keep tuned - http://www.cloudslam09.com/
imho, AMD's idea is sound and timely from different points. Those who doubt, just lag behind like SGI did.