timppu: Why? Because otherwise all GOG games are indeed DRM'ed, as you can't freely download (deliver) them to your PC without first validating yourself as the owner of the said product (by logging into GOG servers, and it checks which games you are eligible to download). That is not "totally necessary" in order to run them, GOG could just as well let anyone download any GOG game.
Breja: But it is, obviously, totaly necessary for the store to function as a store. Right now I'm thinking you're being obtuse on purpose.
Someone else might just as well claim that a store or publisher can't function if they don't check whether you are eligible to run a game, every time you run it.
Whether something is considered necessary for the business, doesn't have anything to do with the definition of DRM.
Breja: But I would still have to use a client. This does not change anything. It's still something totally unnecessary being forced upon me. It doesn't matter if I get to choose a totally unnecessary thing A or totally unnecessary thing B. How are you not getting this?
A web browser (used for validating your purchases at any point) is also a client. And it can be considered "unnecessary" as well at least as the only option, as GOG could just as well offer a service to e.g. deliver the games to you on CD-R discs (for an extra delivery fee, if necessary), or even let you come to their office to copy your games to an USB memory stick.
timppu: So in reality your definition has nothing to do whether a certain client is optional or not.
Breja: It has everything to do with that. In your example using a client isn't optional.
Web browser is also a client, and it could be optional as well (by offering e.g. the CD-R delivery method as well).
timppu: Having to use a web browser to log in and download your GOG game can just as well be considered "artificially obligatory", as they could just as well offer you an option to get your GOG game delivered on a CD-R to your doorstep, or even go to their office yourself to copy your game(s) into an USB memory stick. Then you wouldn't have to use a web browser to let GOG check whether you are allowed to download any certain game from their servers.
Breja: Can we maybe have a serious discussion? One that actually deals with reality? That would obviously not be a possible way for GOG to work, any more than not having accounts and allowing everyone to download everything, and you know this. Why even bring it up?
First of all, claiming that GOG couldn't possibly function in any other way than currently has no basis in reality. One might just as well claim that Humble Store can't possibly function with a "Pay What You Want"-model... yet they do exactly that.
For instance, I could see it as a realistic possibility for a digital store to function with a donateware model. That is, anyone can download any game from the store (even without an account), but people could also donate money to the store and certain publisher, if they like their game enough. Sure the store might not make as much money then as there could be more freeloaders then... but it is a realistic possibility, especially as some SW developers work exactly like that, with the donateware model. (And I personally feel the Humble Bundle's PWYW is not far from the donateware model; there is some small minimum pay like $1 or $5, and anything above that is your optional donation to the store/publisher/charity).
When it comes to your claim that of course the store has to check who is eligible to download what, someone else might just as well claim that of course the store and publisher has to always check that you are the true owner of the game license and don't try to misuse the game, hence it should be considered necessary to make that online validation each time you try to run the game.
Whether you feel such validation is necessary for the business to function (either at the delivery part, or the usage part), has no bearing for the definition of DRM.
Breja: "If I'm forced to install/use something that isn't actually necessary for the game to work in order to download/install/play it- that's DRM."
And I can't help that. On purpose or for real but it's just too complex for you apparently.
That is a very vague and weird definition of DRM. As I have pointed out numerous times, even defining what is really necessary (to deliver/install/run) the game is not straightforward, hence your definition is totally meaningless. You say it is necessary to check whether you are eligible to download a game; someone else might claim that also making that same check is necessary when you try to run the game (to check that you haven't e.g. given the game installer to all your friends after the download, and they play it too).
Don't fight it, I am certain you are starting to see that extending the definition of DRM to the delivery (download) part isn't very useful, unless you really believe that all GOG games are already now DRMed.