It's normally not an admin's
choice to stay slow and out of date. This is
especially the case in a non-IT-centric business, which nonetheless uses technology to function.
Typically, the issue is like this:
1) Management demands that a specific solution is installed, and ignores IT's complaints
2) The solution requires an environment IE 7 (or Windows XP, or... take your pick)
The admins now have two problems: they need to convince management to move away from the old solution to a new one (another capital expense), in addition to maintaining a hateful, old environment so that the business doesn't break.
Senior management doesn't realize they dug their own grave, and refuses to pay for the capex "just" to have the latest version of the solution, when the business is seemingly working just fine on the current environment.
Eventually, after much praying and finger crossing, only one of the two things saves the admins:
1) The solution is upgraded to support modern software
2) The environment becomes unsupported, and management is forced to reconsider the upgrade.
Have some sympathy, mate! :(