Dev wrote on Jan 15, 2012, 20:42:

Jerykk wrote on Jan 15, 2012, 19:58:
On a side note, what exactly is it about Steam's content delivery rules that EA can't accept? DAO and ME1 and 2 both have DLC that cannot be downloaded from Steam. So what makes DA2, Crysis 2, BF3 and ME3 unique?

The most likely explanation I've seen is that valve saw EA trying to sell exclusive DLC through its own games on steam (without also offering the option to sell the DLC through steam), and realized that the already signed agreements didn't stop them from doing that. Valve didn't expect anyone to pull that kinda trick. And it would have been bad if the F2P games started doing that because then steam would get NOTHING in return for hosting those games. So when the next game from EA came up (I believe it right around DA2), valve put a thing in the agreement that said they couldn't do that unless they also sold the DLC through steam. EA signed the change, didn't care about the contract and kept doing their crap, valve called them on it, and EA had 2 choices.
A) They could have agreed to ALSO sell the DLC through steam as well as through their own channels.
B) OR they could just pull that game and say "screw you valve."

They of course chose the latter. The other games are still there because the agreement signed for them didn't prohibit them from that kinda thing.