serpantino: Anyone with a large game collection stands to lose out if GOG goes under. There's talk of backing up all games offline but realistically, not everyone has a strong enough Internet connection and if the masses of users start doing that then the servers are going to crawl.
If GOG goes under, I am not losing any game, because games here are DRM-free, and my game collection rests safe in my two computers and in an external backup drive. Both windows and linux installers.
This is one of the biggest draws of GOG: I wouldn't have started buying here if I couldn't play my games when the company goes belly up (I don't expect that to happen soon, but eventually, every company disappears).
Even if I don't have the best internet connection, I have already backed up all my games . Every time I buy a new title, I spend some minutes backing up and updating the games I care for. I strongly think every GOG customer should do the same, because if we all start trusting The Client and The Cloud, we would be telling GOG that we don't care if they start relaxing or even ditching their DRM-free core principle.
So now that you bring this to the table, this could be a good time to start backing up your collection.