>>>I think you are a playing a little fast and loose with the meaning of embracing of a new technology in terms of the replacement of an established one.
>
>You think I wrote the IDC article? They're the ones who said that the PC-centric era is over. Perhaps you should go share with them rather than blaming me. ;-)

(I find this "subject" interesting so I decided to jump in)

John, are you referring to this article?
http://www.idc.com/about/viewpressrelease.jsp?containerId=prUS22593310

Lots of stuff in there regarding percentage of use of mobile devices/apps but this is the overall meaning I took from it:

"In 2011, we expect to see these transformative technologies make the critical transition from early adopter status to early mainstream adoption,"
...

Mobile computing – on a variety of devices and through a range of new applications – will continue to explode in 2011, forming another critical plank in the new industry platform. IDC expects shipments of app-capable, non-PC mobile devices (smartphones, media tablets, etc.) will outnumber PC shipments within the next 18 months – and there will be no looking back. While vendors with a PC heritage will scramble to secure their position in this rapidly expanding market, another battle will be taking place for dominance in the mobile apps market. The level of activity in this market will be staggering, with IDC expecting nearly 25 billion mobile apps to be downloaded in 2011, up from just over 10 billion in 2010. Over time, the still-emerging apps ecosystems promise to fundamentally restructure the channels for all digital content and services to consumers.

Purchases of pc's may decline, but I really don't think the pc in the office environment will go away or be replaced (supplemented, yes) by mobile devices for at least the next 5 years or more and in some industries, not at all. Many business apps could go to entirely voice or touch screen, but there are still many that will continue to require user text input for years to come. Some devices that allow for an additional keyboard input device could replace pc's but in some industries I see that as moving more towards cloud computing or web-serviced apps that have a front-end on a lighter device.

There's also this one:
http://www.idc.com/events/eventwebconference.jsp?containerId=IDC_P22429§ionId=null&elementId=null&pageType=SYNOPSIS

But that web conference hasn't taken place yet...