teceem: I've added more to my post.
Sure, what you say might be technically possible - but who here would prefer that? Buy a game, install it, let Galaxy archive it, ... Why? Why would we have to go through all those install processes just to have our backup files?
Well we were talking in confines of what is and isn't DRM Free. Galaxy is DRM Free.
Now you could argue that this would be less convenient for some people, and you would be arguably correct depending on individual circumstances, but that is what you should be arguing. Not about what is and isn't DRM Free.
But for others, they may find this more convenient. For example, standalone installers are hard to keep track off as far as updates. On Galaxy keeping track of updates is simple. With standalone installers, patches often cause an entire re-download. With Galaxy and delta patching, I only have to download what has changed. If I can create an archive from my installed updated files I could far better track my backups than by using standalone installers. Some of that is due to bad site design and some of that is due to the site having no integration with the games like Galaxy does.
For GOG though, this means less overhead. This would mean putting some of the work onto the user rather than GOG themselves. This means more features that developers could make use of without having to worry about non Galaxy users, because everyone would be running Galaxy.
There are advantages and disadvantages to everything, but for GOG I bet is has more advantages this disadvantages..
syscall: You just invented the standalone installer, which is basically doing that.
Sure but that does not change what is possible with a Galaxy downloaded game.
syscall: Afaik, gog galaxy requires you to log in after installing it, there you've got the DRM.
The website requires you to log in to download or install your games too? Your point? This has nothing to do with DRM. The games are not depended on Galaxy to function offline at all after you get the files. Same as the games are not depened on the GOG.com website after you login and download the installer to function offline.
You are trying to create a false narative that doesn't exist.
syscall: If gog galaxy had a feature to archive a game to some file format, let's call it .gog and then allowed you to install it with gog galaxy (without logging in first!) then yes you'd have a DRM-free version of doing things using galaxy. But then again I wouldn't consider galaxy a "client" anymore but an installer and it's just a more complicated way of doing stuff than with the standalone installer.
You have a DRM Free version regardless. If I can move my game files to another PC, never having installed Galaxy, and play them then there is no DRM in the game files.
Again, you are like teceem are arguing for convience not DRM or DRM Free.