foad01: Different developers have different situations. For some devs the 1% extra revenue here on GOG is enough, for some it isn't.
Some people are too picky.
foad01: And it is definitely not enough to just dump a game on a store without any kind of advertisement. Otherwise, you wouldn't read often that people would have bought a game on GOG if they knew this before buying it elsewhere.
Why not? Word of mouth, GoG page and site would likely put it up front for a week, and those that are avidly looking for such games would snatch it up right away. After the first week or two, who knows.
Tell me, hypothetically, let's say Capcom put Resident Evil... whichever version (
1,2,3,4, veronica, remake, etc), with no advertising. You don't think people wouldn't talk and make a fuss on it through the normal gamer news channels? And it wouldn't get those that would have wanted it here as soon as it was noticed?
People look for specific types of games or specific games and companies. A no-name company may need advertising or push via word of mouth or maybe drop a game, and then advertise a sale event 3-6 months later if nothing happened. But a remake or classic would not take long before it took off, at least for a bit, depending on good will and how good the content is.