I’m really not sure what you’re getting at. I can get on my Amazon Cloud right now and either have my music streamed or I can download it to my phone if I want.
Didn’t cost anything.
What iTunes in the cloud does that Amazon doesn't:
In a nutshell, you can drag and drop some of your music library to the Amazon cloud a track at a time, or with one click have your entire library in the cloud automatically synched and completely legit. We'll see what changes Amazon and Google have to make to their cloud plans when the RIAA gets through with them.