Cloud might get cheaper and cheaper, but it still doesn't solve the fundamental issues: security, privacy, NSA invigilation, crazy contracts that state cloud providers can do pretty much everything with your data...
Call me a luddite, but for syncing folders and data I'd rather use BitTorrent Sync or a similar P2P solution. And if I want to share something with someone, it is always faster and more secure to use Filemail (30 GB for free) or some other service rather than a cloud drive.
People will soon start discovering how many strings are attached to cloud storage.