Basically. GOO is an alternative form of DRM tailored to compete with SecuROM and the like and is meant for other publishers to use. It is account based, very similar to how SD does it, which means it doesn't care about installation limits tied to some ambiguous machine ID where upgrading a piece of hardware uses up another ambiguous number of activations.
It's also meant to be vendor-neutral, meaning if, say, you buy a GOO'd game from D2D and D2D goes under, you can still download it from Steam or Impulse or Gamersgate or whatever because your registration for the game is universal and not specific to any particular vendor.
And finally, it also allows official ways of transferring your license for purposes of re-selling the game, the publisher gets a little cut and nobody gets to complain about the serial already being registered.
I think Frogboy described it best - GOO is basically what SD has been doing (minus the serial transfer) rolled up into a package that any other publisher can use.
