Storage
Always makes me laugh when people say "you don't need storage, that's what the cloud's for".
Yeah...i'll be right on that, just as soon as I can have 20Mbps+, EVERYWHERE.
We're a million miles away from cloud storage being reliable ubiquitous primary storage. And by a million miles I mean 5-10. The networks are still favouring headline speeds over real world coverage. And no, I don't live in the sticks.