If you have a bunch of computers, you can now buy the "Windows 7 Home Premium" upgrade for $149, for three computers. I almost did that, but!
...if you want to backup all three computers to a network drive, you have to buy the "professional" version separately for each machine for $199 x 3 = $597.
The upgrade to the network backup feature ($149) costs more than the entire OS ($49). This is if you don't really care about BitLocker, joining domains easily, or having an easy way to install XP in a virtual machine, which I mostly don't.
Why is keeping good backups such an expensive feature? People care about their data, and Microsoft should care too.
Single external USB drives are a huge point of failure, and people should be allowed to use their external RAID NAS device they bought for $300, without paying additional humongous sums of cash to do it.