On the other hand - I really hope this isn't a segue into more DRM or something similar to what steam does - providing a client to play games instead of actually downloading and having them. GOG is one of the last few bastions that lets you buy and own games. They've got a few in their catalog now that require proprietary launchers/drm etc and I really hope it doesn't become a trend.

Humble Bundle increasing sells steam keys instead of actual games, or sells keys to 3rd parties that DRM, or sells DRM'd ebooks etc. GOG, Humble and Itch are the last big players holding the line on DRM free stuff. I worry that if any of them slip (further) into the lucrative darkside it would be disastrous for consumers.