I was just visiting the official GalCiv2 site and found out there is
no copy protection in Galactic Civilizations II. I am shocked.

In these days game publishers are trying all sorts of copy protection programs possible. For example, in the upcoming Heroes of Might and Magic V, UbiSoft is going to use StarForce, despite the many complains/protest in their HoMM forums.
It's great that Stardock is taking a whole new approach to the issue (and I hope they sell lots of copies so other game publishers would follow).