I think Dragon's Dogma is the type of game that I would enjoy a lot, but I don't want to reward Capcom's behaviour of abandoning a game that they are still selling here. So I choose to buy other games.

Games that are actually abaondoned? Ones where the makers have shown utter contempt and disdain for the versions sold on this particular store and don't bother updating often if at all?

Hangin is too good for em, burnin is too good for em. They should be buried alive. The games that is, until the makers put some effort into maintaining them on the store they choose to put them on.

Oh the publisher is definitely to blame here, BUT considering we have a dedicated thread for games that are missing updates/features I'd say GOG should take matters into hands

Games like The Binding of Isaac that should be quite easy to patch up (at least the balance changes) are still outdated even after 2 years, just how, why? both GOG are the publisher are aware of it

Also regarding the "bad updates" that cause more issues than fix things, let's be real, most updates are absolutely fine

What I would do, is nothing. Not my circus, not my monkeys.

But if I were someone at GOG whose role it was to see the games were getting up to date, I'd start with the indies with low buy in and flush the ones out who don't respond within two weeks of a "please update" email. If they claim to have sent an update, I'll find the head of the Product Team or person whose job it is to deploy that update, slap them upside the head, and ask them where the heck the file is.

Then we move to the bigger games. Obviously some of the publishers won't ever deign to respond due to a language barrier. These are cases where I would be left to wonder why GOG accepted publication in the first place. Individual negotations would be tricky, and my goal would to get as few people between the developer as possible.

Older games (Out of support window): Send a few ominous sea shanties, and if current rights holder does not respond, update the games using resourceful treasure hunting. If rights holder complains at this point, ask why they never responded in the first place.