Kabuto: You honestly beleive that might happen? Add another layer to that hat because if EA did that, they'd just release their games on Origin and skip GOG altogether. But that's not going to happen either because there's no way they'll allocate the resources required to do that.
What resources? Are you suggesting that having some hundreds of thousands of people playing some old games online is really that expensive for a company like EA? Besides, if it's not profitable they can always come with the same crap they always come with: "not many people were playing it so we shut down the servers".
Look, EA runs a store and that store is tied to an account, the same account that is used for online, for the forums, etc. It's like Steam if you need an easier example. If they can force gog users to sign to an EA account to play online, that's hundreds of thousands of people they can add to their marketing plans.
Yes, I know, tinfoil hat. I just prefer to not trust big publishers, sorry.