XML is Fine. It's Plumbing. No One Gets Excited About Plumbing Until It Fails.

http://www.extremetech.com/article2/0,1697,1974390,00.asp

They still don't get it.   

http://www.hbsp.harvard.edu/hbrsa/en/issue/0606/article/R0606B.jhtml?type=F
 
These guys get it.

It is the HTML browser (or the page metaphor itself) that is holding
them back.  To really build a 3D GUI, you have to let go of 2D buttons
and just let text be text.
 
Once upon a time, hypermedia experts finally realized that having links
inside the text stream was a dead end approach to information
integration.   Then HTML dragged them back.   GUIs work best when each
media type operates in accordance with its own strengths.
 
If you can have intelligent 3D objects that operate inside an
intelligent spatial/temporal environment, use those to find the user and
help them do what it is they want to do.   Having a 3D world full of 2D
web pages is simply moronic.
 
Quit looking at the screen and expecting it to inform you.   Look out of
your window, not into it. 

Len

In a 2D world, you find events.  In a 3D world, events find you.