There have been some really fantastic arguments for and against. However, as someone who has played the original Fallout as well as it's sequel, coupled with having played Fallout 3 and New Vegas, I am in complete favor of Interplay loosing the rights to Fallout completely and having them go to Bethesda. From where I stand, Bethesda made a better game and expanded the Fallout Universe in a really enjoyable, creative, and altogether brilliant way.
Two things here, however. A) I'm no Bethesda fan-boy. I hated all the Elder Scrolls games and I think Brink is garbage. However, Fallout 3 took a Universe that I had *somewhat* enjoyed and took it to it's full potential. Interplay could have benefited from this by working with Bethesda as opposed to just selling them "some stuff" and then trying to do their own thing with another corner of the license.
B)I am *not* in favor of people loosing their jobs, which the closing of Interplay would cause. I am hoping that, with the financial crisis their facing, Interplay will swallow their pride and accept an offer that Bethesda will hopefully offer to bring them into the fold to help create new Fallout titles or other IPs. Interplay still possesses a talented team and I'd hate to see them put out to pasture simply because Interplay, IMHO, chose to be a bit greedy and jump the gun with this ambitious Fallout Online project.
Lastly, let me state clearly that these are *my* opinions, and I'm not speaking for anyone else. If folks think I'm wrong, okay. I'm just stating my viewpoint and I'm not looking to flame anyone else's or be flamed in return. Just tossing out my two cents for what little their worth, which I'm sure is very little in the grand scheme of things.