My dream is for consumers to move away from using many different subscription-based, web-hosted services, each with their own cloud storage feature, and shift to a model in which each person uses just one or two services like Dropbox to sync local files across multiple devices, editing them with software installed locally and purchased through one-time or update-based payments.
One wrinkle in this that I see is that online collaboration depends on a centralized server host, typically the company providing the service. So my further dream is that we find a way to decentralize server hosting and empower ordinary users to host their own servers.