I can confirm that many corporations still use IE6 for some reason. It's quite ironic how much the value security, but on the other hand let their employees use a 10 year old browser.
2) Draconian IT policies preventing workers from using non-approved software
3) Idiotic decision making from last decade to use ActiveX/some other IE6 only feature for some critical applications.
IE6 still has extended support with XP, but in a few years things will be very bleak for some of these companies.
But it's not all bad, some enterprises have a modicum of reason, solve the problem and at least try to avoid getting in the same mess again. At least that's the trend I perceive.