hobbes543: I hope the GoG version sells better or on par with the other digital download services.
That doesn't seem all to realistic given the exposure of other digital download services compared to GoG, now does it?
How many people know and use Steam and how would these figures look for GoG?
Furthermore pricing might play a massive role here if other services offer decent enough discounts (despite the 'hidden' bonus of moral, DRM free, goodies, or even old games).
And last, but not least, there might be a trust issue. GoG isn't exactly famous for their support or their capability to handle a web appearance (they have no API, they lack all the basic features other similar services offer like seeing another person's wish-list, directly gifting games, they do not even have a working private message system on their forum).
I doubt that the actual amount of purchases through each of these channels can be seen as a direct sign of dis-/like on DRM.