They're thinking about how rich they'll be after skyrim is released.
I'm sure Zenimax Media and Bethesda Softworks feels that way. Save for Todd Howard who may get royalties ontop of his pay check the development studio of Bethesda Softworks, aptly named Bethesda Game Studios, employees probably gets paid around the industry average.
Which isn't a large sum but not small either. Not like the corporate arm is getting anyways.
I'm sure being private feels nice though. I'll give them credit for that.
The developers are probably working through one of the most rushed and overworked periods of the whole project. Remember this isn't a team of a dozen but over a hundred. And even after the game goes gold work isn't over.
This is their job remember. Most will probably be anxious until the sales numbers and reviews pop up at which point they can sigh and let loose, celebrate with co-workers, family, and friends.