[srinivasanv]

Way too many applications I use (including Sublime Text) just aren't compiled for ARM, so it's not really a "one OS" solution for me.

[Shorel]

And what makes you think they never will?

If Ubuntu Edge succeeds, I can't see why application developers will not jump ship towards ARM.

[srinivasanv]

Certainly, but only for applications in active development. Many are closed-source and not being worked on anymore.