Siannah: Again, if the site is down you likely can't login at all, no matter which digital distribution we're talking about, which includes GOG.
Except that logging in is MANDATORY for Steam games. If I can't login to GOG Galaxy to play Freedom Planet, no problem because GOG accounts are NOT MANDATORY to play the game, let alone Galaxy. Therefore, if I logged out during this outrage while I was supposedly still on Steam, I wouldn't be able to play games unless I utilized the horrible offline mode, something I wouldn't trust to actually run offline.
Siannah: They didn't even triggered, so even assuming games or accounts were at risk, is beyond speculation and belonging into the conspiracy theory category.
I don't know what you mean, but okay.
Siannah: So did I. I have a NAS set up for storage that fills up quickly and I'm somewhat reluctant to expand it. Fact is: HDs can fail, DVDs can get scratched / lost. In such a case, you'll need access to re-download, same as Steam. Has this been granted by ANY digital distribution ever? Not that I'm aware of....
And you can lose access to downloads, that is not far-fetched. Steam can go down for a great while without being able to download anything. You can lose access to your Steam account, be it through forgetting your login details or being changed and stolen by a scammer. It could be because of Steam going down the land of no return. The point is, with HDDs and DVDs, it is your responsibility to keep them safe and sound (which I do with my burned DVDs), but with downloads, your whole reliance is on the distributor being alive and still having access to them.
Siannah: However, if you want to go discuss maximum credible accident scenarios, assume the same for GOG and your DVDs lost / unreadable - everything else is just not valid.
Again, with GOG, if the service died, but I happened to have the backups on DVDs, no problem. I can install them and play them for as long as I wish. But when Steam goes down, I can't reinstall or repair the games as many time as I want. And that's all for something that's not in your control. You can't take good care of Steam itself so it'll never go down, as you're not Valve. However YOU can take good care of your own DVDs in order to make them long-lived.
Finally, if you still prefer redownloading game backups, you could store the most important ones on cloud services. However, even those come with their prices.