Hmm... I think game design is an artistic thing and I don't know if a guy who works 24/7 like a slave as the-guy-who-makes-the-concrete-textures could be a good creative artist.
Maybe that's one of the reasons why most EA games are actually lame. On the other hand there are many companies that are different. To my knowledge Rareware has a very worker-friendly, homelike working atmosphere and hell look at the games they made! Donkey Kong for SNES, Goldeneye for N64 and many more
Even Valve seems to be very nice to work for, although the crunch time of HL2 must have been hell on earth.
What I want to say is that in my opinion a good working atmosphere is essential for ground-breaking games. Some managers and producers just don't get it.