I don't think these people are stuck with IE6 either. I'm pulling this out of my ass but my belief is that IE6/7 users are people who don't own the machine, in other words employees stuck with corporate system[1]. Other than that you can just install and run firefox or chrome on old machines[2].
[1] I've seen it in national offices were they could only use a verified systems that were implemented by some company in the win95 days so they can't upgrade. In other companies they bought brand new lenovo desktops and scrapped vista to put xp+office2k3 for IT support and compatibility reasons.
[2] I run a 2006 laptop as my main one (tpad x60s), and often use a 2005 x41 on the go with no issues.
[1] I've seen it in national offices were they could only use a verified systems that were implemented by some company in the win95 days so they can't upgrade. In other companies they bought brand new lenovo desktops and scrapped vista to put xp+office2k3 for IT support and compatibility reasons.
[2] I run a 2006 laptop as my main one (tpad x60s), and often use a 2005 x41 on the go with no issues.