Its a shame considering its so new to the market in all honesty, and its adoption slower than expected. I mean don't get me wrong, it has taken over a lot of the desktop market, but most of my customers are running a Windows XP/7 mixing bowl on their network, for no other reason than to save money.
Yup, in fact the vast majority
of people where I work are still on XP. A few of us are running Linux (Debian and Ubuntu), and there are also a few Windows 7 "early" (for us) adopters.
I've attempted to get most/all of them to switch for security reasons alone, but they too have to answer to the gods of the wallet. I think Windows 7 came at a time where the economy got bad and people chose to push their junker/older XP machines until they died. The sad thing is people don't realize how much productivity its costing them to have slow machines and ones that aren't reliable. Windows 7 will be covered until 2015, so I'd imagine at least 1 more service pack will be released, especially considering another OS will be released in the mean time.
FWIW XP still has about 2 years of extended support left, so I imagine a lot of people will hang on to it until late 2013 or early 2014. Extended support for 7 goes all the way out to 2020, so we can probably count on it hanging around on a lot of systems until then.
The have to make the two place nice at some point. If they don't take care of the Windows 7 OS in hopes of pushing Windows 8 off onto people to make up for the long run of XP, then I'll consider never purchasing another Windows OS again... Take care of your customers people, or we will most certainly abandon you.
I've already all but abandoned Windows for my own systems, both home and work. I still need to support it for other people, and keep a Windows VM hanging around for those occasional "Windows emergencies" though...