Dropbox Updates Apps for Android, iOS; Launches App Directory And BlackBerry App

There's your problem. Apple loves iTunes. That's why it's such a pain, because Apple loves it to the degree that they want to use it to control everything. Saying "Apple should buy dropbox to replace iTunes" is like saying "Microsoft should buy Ubuntu and use it to replace Windows".

Apple doesn't need to buy anything, they have plenty of talented designers and engineers, they merely need to realize that the way iTunes works and the way it is used to manage devices is broken and they need to come up with a new model for managing devices.

From the article:

    With new iOS release of Dropbox, new iPad and iPhone apps include automatic
    offline caching for recently accessed files, support for HD video and
    high-resolution photo capture. The apps also feature a UI improvement
    including a new home screen and progress display, full screen landscape
    document viewing on iPad and the support for multitasking to allow files to
    upload or download in the background.