I love the idea of Ubuntu (not that it hasn't happened many times before) and have a great deal of respect for Mark Shuttleworth for basically funding Canonical out of his own pocket. However he (and Canonical as a company) make some terrible design decisions (Unity, premature adoption of Pulse audio, and -most recently- Ubuntu going solo with display managers).

I wouldn't be the slightest bit surprised if Shuttleworth sees himself as the "Steve Jobs" of Linux and with the direction they're taking, I think Ubuntu will be like Android/Linux (ie still "Linux", but largely incompatible with the traditional desktop Linux ecosystem).

Hopefully I'm wrong. But Shuttleworth has done little to give me confidence.