Do you really care about access to your applications (e.g. MS Word) or the functionality they provide (e.g. editing a document)? I think it's more likely just the functionality + the information. I think more likely Mac OS and Windows are doomed to failure. All I want is my information + function + communication (an emergent property of this would seem to be collaboration).
It depends on the application. Notepad I held no feelings toward. But I will fight to the death to protect my use of TextEdit.
And you seem to forget, unless I'm misreading you: a part of using an application is the experience it provides. What are you saying will beat Mac OS and Windows? Google Docs? Buzzword? Hardly.
Good point. I think user experience is important as well. But as demonstrated by many of arcane JavaScript emulators out there (vi, terminals, etc), I'm sure you could devise just about any user experience you would like in a simple web page. I'm not sure the Windows and Mac OS killer exists yet, but I think they will become increasingly irrelevant (as well as the non-browser apps installed on them).
That's always possible, but I'd bet against that. Perhaps in the long, long run, but I think that 10 years from now the desktop will still house the killer apps. Not the Internet.
