DaCostaBR: This is not true. From the user agreement:
"Your GOG account and GOG content are personal to you and cannot be shared with, sold, gifted or transferred to anyone else."
You absolutely are not allowed to share your account, or your games, with someone else. Because it is DRM-free GOG can't stop you from doing it, but their entire system is based on trust between them and you the consumer. Make no mistake, if you are doing this then you are breaking the rules, and breaking that trust.
Of course the theory (TOS) are what you said.
But if you go to read the staff posts about this you will notice that they tell you to use your digital copy like a physical copy (so if your friend play it you need to play something else).
In any case, what is really important to them is that you do not spread a pirated copy of the game you bought online or with lots of people... they are human, they understand that if you and your brother/sister buy a copy you and him/her will play the same copy of the game from the same account.
If they thought otherwise I would have already abandoned gog (since there is no official family share).
I do not think I've broken the trust of gog only by allowing my brother to play the games in my account (or allow him to log in in my account to download my games).
I think you are wrong.
same, I think you are wrong. Gog already said that there is nothing wrong if you give your copy to a friend (just play something else while your friend play like with a physical copy). for the account it is my responsibility if I share my log in (that's why it is personal, if I share my login password it is my responsibility if something goes wrong).
Both of you are right in theory, both of you are wrong in practice. Proven wrong even by the words of those who work in gog.
As far as I know you are the first not to have understood this simple (and logical) concept.
Here however, we're going off-topic: The topic is about Switch. Games in this console will be tied to the account. This is the news that I care about, end of the story. I don't want to explain why family share is legit, and I don't want to explain why TOS are not even law, what gog think about that, or what you think about that. I just want to say that I'm happy because I will be able to go with digital on Switch instead of physical.
end of the story PS. read this:
https://www.gog.com/forum/general_archive/a_few_licencing_questions/post11 that's why I know I'm doing the right thing.