This is very true - I've been in and out corporates for years and most environments are locked down. I mildly disagree with one assertion in the article: -Anot

This is very true - I've been in and out corporates for years and most environments are locked down. I mildly disagree with one assertion in the article: -Another reason is many internal IT systems were built to use IE6 specific features- This is somewhat true. However, the real reason that corporates don't upgrade is the cost of rollout. In a big corporate you'll have literally 1,000s or 10,000s of desktops. This is compounded by the fact that a browser isn't a single application - it could be hundreds of applications. Something like a bank is generally going to be very conservative, so they'll only attempt that if it's properly regressed and tested... The cost and risk of this (let alone if something does break) is generally not enough. Only a couple of years ago I was at large bank that was still on Windows NT. They only migrated when the risk of being out of support outweighed the migration risk. Even then, corporates have a fair bit of muscle and very often arrange extended support. A lot is of made of when products come out of support, but the reality is they are supported on these kinds of specific deals well beyond those timelines (and generally for a very tidy profit for the vendors).