There was an upgrade discount when Win 7 came out, too, down to $50 [1]. Additionally, as others have pointed out, it's unclear how many of the 40M licenses ar

There was an upgrade discount when Win 7 came out, too, down to $50 [1]. Additionally, as others have pointed out, it's unclear how many of the 40M licenses are upgrades vs. OEM licenses. [1] see http://www.tomshardware.com/news/windows-7-upgrade-discount-cheap,8146.html http://www.tomshardware.com/news/windows-7-upgrade-discount-..., for instance