I won't be surprised if some banks and other big corps continue to this day running XP and IE6 on their workstations
Large business are not used to run most up-to-date software, they move very slowly with their tech in many instances
They do. My company delivers financial SaaS to banks and we have to write our web pages to work on IE7 because some clients haven't upgraded. Other clients tell us that they still use XP SP4 (as if that really matters for web-based applications that don't intend to deliver malware) and and demand that our app must still work on XP. We started charging those clients extra fees to support old JScript and CSS code.