Just did a GOG survey that focused on the idea of a paid membership option on GOG. Seems they're determining what people would be willing to pay extra for. Some of the options were
- a tool for backing up offline installers
- ability to install previous versions of a game
- extra insight into the preservation work they're doing.
- voting rights on games to bring into the preservation program.
And others that I can't remember.
I also got this survey and I had the same feeling. It felt more like a patron for their game preservation program with possible features like a members-only-community, interviews or documentation about the preserved games, their publishers/studios and the efforts to keep them running or some kind of loyalty rewards/discount coupons. Maybe even 'special builds' like 'experience the OG version 1.0 of $game'.
There was one option, that I interpreted like 'maybe we will put future compatibility updates after purchase (e.g. supporting Windows 12 or whatever) behind the membership' - but that's purely my interpretation of a single bullet point style line in that whole several page long survey