Unity is a shell interface for the GNOME desktop environment
(Very first line in Wikipedia)
Ubuntu, like Unity, is a shell around something else (Debian) with very limited value added.
Just "going to the clouds" (tm) doesn't make a winning company (alo because everyone else is going there).
No, I don't think Canonical will be the next Apple (or even Microsoft). It's more likely it will be the next Mandrakesoft.
The difference between reality and unreality is that reality has so little to recommend it. -- Allan Sherman