Okay! I think you understood my point. I was proposing a problem which comes with an huge opportunity like you mentioned which is yet to be solved.
1)Imagine you can use your personal computer from your "Work computer". I am speaking about the exact same feeling but i don't have any kind-of UX mapped out.I do think we would need a total UI revolution for any kind of this thing to work.
2)I am aware of some of the challenges involved and I don't think Broadband will be an issue in the coming years even in thirdworld countries.