Pheace: So all they'd have to do is contact the dev, same as they do for GOG connect, many of whom already give out Steam keys for the same games in other places, and ask them to do the same here for owners of the game.
That sounds like it'd be making things too complicated for GOG. Not to mention there are plenty of devs already that you can email, send over your receipt, and they'll give you a Steam key. And you know how GOG is about doing things that the community already knows how to do, albeit less efficiently, themselves.
DC-GS: That's the thing I don't understand. Why would it be bad for GOG?
In my opinion that would allow be to buy games on GOG too, IF I want them in both of my librarys without paying twice.
So, is the goal to coexist with Steam or replace it?
You have to think of this in the mind of the average Steam customer. The average Steam customer has no idea GOG even exists and probably doesn't care. They want the better functionality of the client, they want the achievements, they want the new games (just look at the fact that The Witcher 3 is what makes this store probably 70% of its profits and ask yourself why that is - add to that the fact that buying TW3 elsewhere [though I forget where] usually gives you a free GOG code, and add to THAT the fact that people often stop by the trading thread frequently to get rid of this code and try to trade it for a Steam copy of the game). To them, Steam is the only thing that exists and they're shocked when you tell them there are alternatives. Chances are they don't even know what "DRM" is.
The point of Connect is to say to these customers "Hey! Come over here! Free games!", have them show up and go "Wow, what's this place? I didn't know about this before! And now that I've got free games here, maybe I'll give it a try!" and be hooked. If you do the opposite, all you're doing is encouraging people to play their games on Steam instead of GOG. It's nice to do for the customers, sure, but this is the equivalent of advertising for your opponent.
The goal is to coexist with Steam, but the competition is natural. It's built into the business whether you like it or not. In order to coexist with somebody who owns a monopoly, you have to get some of their customers unless you're satisfied with the barely over $1,000 in profits that GOG was originally making.
The purpose of Galaxy and appealing to Steam customers and whatnot isn't to try to directly attack Steam (which, if they did, I assure you they would be miserably crushed if not swallowed up whole), it's to try to appeal to their customers by giving them a smooth transition to a setup that's familiar.
Also, for goodness' sakes, quit downvoting the OP just because he dares say something that even remotely smacks in favor of your Hated Demon Steam, ya morons. The man's just trying to ask a question, and a legitimate one at that, a rare treat to get around here some days.