Many corporations are taking a serious look at PC virtualization, which eliminates the need to purchase PCs.
Instead, toss a bunch of blade racks together, virtualize your userbase, simplify your desktop management, address many of your network security issues, keep all your data "safe" in the data center, allow better user experience for remote users... lots and lots of benefits (if you can get it to work).
In my company (a large bank), we are due to refresh 10's of thousands of PCs, yet instead, we may refresh NONE of them, go with virtualization (and the saved costs of keeping older PCs will fund the new infrastructure). With PCs bought in the last 3-4 years, acting as thin-clients, we can keep them until they break, and replace them with some cheap thintops.
If many companies are going down this route, then it would be no surprise, coupled with the economy, that PC sales in the corporate world would be dropping!
Lokatana