> In the meantime Dropbox's core offering of syncing and sharing files seamlessly as well as providing more security minded options for businesses is something that no one else has quite gotten right.

I'd argue that Dropbox haven't quite gotten it right either: to my knowledge, they still don't support client-side encryption, which is IMHO non-negotiable in any cloud storage product.

I really respect Dropbox's ease-of-use, but I think at this stage in history it's outright irresponsible to offer a cloud service in which one can see one's customers' data.