That's a brilliant observation.
I'll never forget the CIO who told me (I was a consultant presenting a Help Desk application that we had been hired to implement and were about to deploy at his company) - It doesn't look enough like Google. I want it to look like google - just one line that I type what I want into.
Now, to me, google (or google's address bar) is a huge improvement on the Command Line. I bet the same guy wouldn't have wanted to return to the days when you had to guess what the command-line needed you to type, much like an Infocom adventure game.
That's why Google is a huge improvement - it tries to figure out what YOU want. That's the reverse of a command-line, where you have to figure out what IT wants.