Convenience is the factor where I'm at.
The corporation is more than willing to baby the heck out of the end-users in our department just to keep them happy.
$1,400 a license? buy 35.
How much to have wireless access points installed in all of the conference rooms?
Do it.
17" flatpanel monitors? Yeah, everyone should have those. Except for the people who want the 19" ones instead.
USB Keys, DVD burners, External laptop batteries, Three types of VPN access, all new hardware every 24 months, you name it.

I realize this is not the norm, but about 200 of our users get to be EXTREMELY productive whenever and wherever they want.

The latest and greatest is good, it just can't be applied to everyone.
Keeping this one department constantly up to speed keeps the company as a whole functioning VERY smoothly.