Yes

Gandalf is correct.
Free Multi-player would be great, but I can see the business reasoning and profit margining behind this particular way. I hope that in the near future they would be able to sell just CD Keys (whether or not they are sold Online or not, is another issue) for a diminished price. But I don't get my hopes up. That may be because I'm of the opinion that Dom2 is worth every penny of the $50.00 I spent on it. The same I did for Starcraft years ago, and even bought another copy when I lost the CD a year or two later when I could have just as easily burned or downloaded a new copy.
Either way, you'd have to try to send a petition to Shrapnel and not IW for it.