Also, yes, it's not much of a shift. I'm not arguing people rebuild it or have something together but the shift from:
Call cab firm and say where you are
to
App calls cab firm and says where you are
is not massively innovative. (edit - particularly when it has been done before)
I know it's fun and cool to be snarky, but you have clearly missed what I've said and equated it to something wildly different. Please put a little more effort in to your comments to make them more useful.
The Dropbox comment is amusing because that's a complex thing users would have to do and doesn't support what Dropbox supports. Switching from one app to another is really quite different.