I don't think Amazon is looking to compete with Dropbox but really iTunes in the cloud. For them, competing with Dropbox would be like shooting themselves in the foot. As long as Dropbox remains on S3, Amazon makes more money the more successful Dropbox gets. If they start to compete directly Dropbox will surely move to a cheaper solution and Amazon will loose a pretty large contract. They would also loose some trust with developers who feel Amazon might smash them at any moment. If Dropbox ever moved as they probably will, I think Amazon may consider competing, but even then don't seem to be in the business of creating client software (exception kindle).
You have made a really insightful comment, but I struggle to read it without wincing because of the misspellings.
lose, v. to part with something
loose, adj. not tight.
So yeah, Amazon might lose a large contract and might lose trust with developers. Sorry if it's a bit off-topic but I just wanted to mention how off-putting it is.
