What I meant is that I wish they announced in a more visible way...
Aren't we all? But GOG don't want to change this due to reasons, some speculate that it's related to corporate ethics/interests, PR and such.
...and gave a longer notice than 24 hours. I do not check the forums every day.
I'm afraid that GOG were informed by Disney with 2 days advance notice. You may find other threads with more lengthy "last chance" notice, some games were removed with only a few hours of prior notice, some were delisted immediately (silently). It's definitely not GOG's choice.
For some reason Disney forgot to mention about the exclusion of Disney The Jungle Book and now we have an exclusive which is not available on Steam. I wonder for how long.
I personally think that the best way of informing would be to have threads with big exclamation marks about delisting and chat messages to all who have games in question in their wishlist sent by GOG automated system or bots.
At least we have something, haven't heard about other digital stores informing their clients of game delisting.