randomuser.833: Wondering again why everyone is barking at GoG while how upgrades are done or not done is a decision of the publisher/developer and just them.
We got several games where the owner of the old version (and its DLCs) got the new one for free.
Naming Outward, Spellforce 3, Observer or the Terminal Cuts of Bloodrayne.
It went that way because the Dev/Publisher wanted it that way, not because GoG was telling them what to do...
Same goes for what is discounted how much.
GoG can only suggest something but the dev/publisher does not need to follow that suggestion.
It seems some people are just seeking for a reason to ride an attack against GoG.
Ride that attack against the ones who are in charge of the decisions...
KingSyphilis: There's an important distinction that needs to be made: Steam allows the publisher to sell both "Packages" and "Bundles". Packages must be wholly purchased in every instance, whereas Bundles may be partially purchased ("completed"). All of the Dying Light offerings on Steam are Packages; they behave similarly to the Editions sold on GOG.com. In this instance, the pricing stucture is clearly Techland's doing, not GOG or Valve's.
GoG is just a company, it's sole purpose is to earn profit, and I'm pretty sure the developers/publishers behind the games would also like to earn some rather than none.
Therefore my suggestion of GoG offering either a separate, reasonable upgrade-opportunities for customers partially eligible for something like Definite Edition in Dying Light's case would be more coins into their coffers than the current situation where customers like I refuse to buy anything because there's no sense.
TL;DR - GoG, developers/publishers and customers would win vs current situation where nobody wins.