tokisto: Hmmmm...
GOG, you have serious competition now. They have a combo that potentially pleases everybody: DRM free, Steam keys and Linux versions.
Depends how ardent they are with providing DRM-free versions and not just becoming a Steam/Origin key seller, or does it remain in the level of "Yeah, if there is a DRM-free version from the developer, maybe we put it into the mix too, if we can be arsed to...", a bit like how GamersGate is selling "DRM-free" games. Albeit, I don't know if GG offers any games with both a Steam key and the local GG version, included in the same price?
That's the thing I prefer with GOG, they are more strict about DRM-free, and not indifferent about it. And if someone comes with the argument that hardly anyone cares about DRM... all the more reason then to believe then Humble to offer less and less DRM-free versions (a bit like the weeklies have increasingly become Steam-key only promos).
That reminds me: since there was a HB Origin, does the current HS include any Origin keys for sale?
But overall: yes, this is more competition also towards GOG. Maybe GOG will indeed look more and more to offering also Linux versions, just like they earlier added Mac versions.